A machine engraves information on an ingot of 99.97 percent pure palladium at a plant owned by Krastsvetmet, one of the world's biggest manufacturers of non-ferrous metals, in Krasnoyarsk, Russia April 9, 2019. REUTERS/Ilya Naymushin 

An employee places an ingot of 99.97 percent pure palladium before engraving information at a plant owned by Krastsvetmet, one of the world's biggest manufacturers of non-ferrous metals, in Krasnoyarsk, Russia April 9, 2019. REUTERS/Ilya Naymushin 

A machine engraves information on an ingot of 99.97 percent pure palladium at a plant owned by Krastsvetmet, one of the world's biggest manufacturers of non-ferrous metals, in Krasnoyarsk, Russia April 9, 2019. REUTERS/Ilya Naymushin 

An archaeologist restores stone engravings at the Temple of Athribis in Sohag, Egypt April 6, 2019. Picture taken April 6, 2019. REUTERS/Mohamed Abd El Ghany 

An archaeologist restores stone engravings at the Temple of Athribis in Sohag, Egypt April 6, 2019. Picture taken April 6, 2019. REUTERS/Mohamed Abd El Ghany 

An archaeologist restores stone engravings at the Temple of Athribis in Sohag, Egypt April 6, 2019. Picture taken April 6, 2019. REUTERS/Mohamed Abd El Ghany 

An engraved artifact on display at the Sohag National Museum, Sohag, Egypt April 6, 2019. REUTERS/Mohamed Abd El Ghany 

Ancient engraved artifacts on display at the Sohag National Museum, Sohag, Egypt April 6, 2019. REUTERS/Mohamed Abd El Ghany 

An ancient engraved artifact on display at the Sohag National Museum, Sohag, Egypt April 6, 2019. REUTERS/Mohamed Abd El Ghany 

An ancient engraved artifact on display at the Sohag National Museum, Sohag, Egypt April 6, 2019. REUTERS/Mohamed Abd El Ghany 

A view shows columns reaching the engraved ceiling at Mortuary Temple of Seti I, Abydos archeological site, Sohag, Egypt April 5, 2019. REUTERS/Mohamed Abd El Ghany 

A woman signs a book at so-called "monument of shame" dedicated to the incumbent president Petro Poroshenko in Horlivka, outside rebel-held Donetsk, Ukraine, March 26, 2019. The monument in shape of a coin almost two meters high, with a figure of Judas engraved on one side and an inscription on the other saying Poroshenko was awarded for treason of his Motherland. REUTERS/Alexander Ermochenko 

A man signs a book at so-called "monument of shame" dedicated to the incumbent president Petro Poroshenko in Horlivka, outside rebel-held Donetsk, Ukraine, March 26, 2019. The monument in shape of a coin almost two meters high, with a figure of Judas engraved on one side and an inscription on the other saying Poroshenko was awarded for treason of his Motherland. REUTERS/Alexander Ermochenko 

A man reads a text engraved on the Monument to the Discovery of America in Plaza Colon (Columbus Square) in Madrid, Spain, March 26, 2019. REUTERS/Susana Vera 

The words, "Knesset Masuda Salman" are engraved in Hebrew on part of a wall in an abandoned Jewish school in Baghdad, Iraq February 27, 2019. REUTERS/Thaier Al-Sudani 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Rami Malek winner of the Best Actor award for "Bohemian Rhapsody" holds his Oscar after getting it engraved. Picture taken February 24, 2019. REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Show - Hollywood, Los Angeles, California, U.S., February 24, 2019. Rami Malek has his Best Actor Oscar engraved. REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Spike Lee holds his Best Adapted Screenplay award for "BlacKkKlansman" waiting for his statuette to be engraved. REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Olivia Colman waits to have her Best Actress award engraved for her role in "The Favourite." REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Olivia Colman waits to have her Best Actress award engraved for her role in "The Favourite." REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Alfonso Cuaron waits to have his his Best Director, Best Foreign Language Film and Best Cinematography awards for "Roma" engraved. REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Alfonso Cuaron waits to have his his Best Director, Best Foreign Language Film and Best Cinematography awards for "Roma" engraved. REUTERS/Mario Anzuoni 

91st Academy Awards - Oscars Governors Ball - Hollywood, Los Angeles, California, U.S., February 24, 2019. Alfonso Cuaron waits to have his his Best Director, Best Foreign Language Film and Best Cinematography awards for "Roma" engraved. REUTERS/Mario Anzuoni 

An engraved plaque is seen in the Church of the Holy Sepulchre in Jerusalem's Old City, March 27, 2018. REUTERS/Corinna Kern SEARCH "SEPULCHRE AWAD" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A close-up of logos engraved on 30-round-mag polymer magazines at Spike's Tactical LLC, a gunmaker in Apopka, Florida, U.S. December 10, 2018. (L-R) 'Waterboarding Instructor', 'Hillary For Prison' and 'Pineapple Grenade' engravings. Picture taken December 10, 2018. To match Insight USA-GUNS/MANUFACTURERS. REUTERS/Gregg Newton 

A machine engraves information on an ingot of 99.98 percent pure platinum at the Krastsvetmet non-ferrous metals plant, one of the world's largest producers in the precious metals industry, in the Siberian city of Krasnoyarsk, Russia November 22, 2018. Picture taken November 22, 2018. REUTERS/Ilya Naymushin 

A machine engraves information on an ingot of 99.99 percent pure gold at the Krastsvetmet non-ferrous metals plant, one of the world's largest producers in the precious metals industry, in the Siberian city of Krasnoyarsk, Russia November 22, 2018. Picture taken November 22, 2018. REUTERS/Ilya Naymushin 

A worker engraves a stone that Hindu groups say will be used to build a Ram temple at a disputed religious site in Ayodhya in the northern state of Uttar Pradesh, India, November 6, 2018. Picture taken November 6, 2018. REUTERS/Pawan Kumar 

Engraved names of British and Commonwealth soldiers who died in World War One are seen at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir TPX IMAGES OF THE DAY 

A visitor looks at engraved names of British and Commonwealth soldiers who died in World War One at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir 

Engraved names of British and Commonwealth soldiers who died in World War One are seen at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir 

A woman walks past engraved names of British and Commonwealth soldiers who died in World War One at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir 

Engraved names of British and Commonwealth soldiers who died in World War One are seen at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir 

A poppy is seen next to engraved names of British and Commonwealth soldiers who died in World War One at the Menin Gate Memorial in Ypres, ahead of Last Post ceremony marking the centenary of the end of World War One, Belgium November 8, 2018. REUTERS/Francois Lenoir 

Engravings left by American soldiers of the 26th Division are seen among 1,000 inscriptions discovered in the Froidmont quarry a 20 kilometers (12 miles) complex network of tunnels which became a refuge for thousands of German, American and French soldiers during the First World War in Braye-en-Laonnois, France, October 29, 2018. Picture taken October 29, 2018. REUTERS/Charles Platiau 

Chon Gonzalez Cabezas prepares to engrave a book at Calero's artisan bookbinding and book restoration workshop in Madrid, Spain, September 12, 2018. REUTERS/Susana Vera 

Chon Gonzalez Cabezas prepares brass types to engrave a book at Calero's artisan bookbinding and book restoration workshop in Madrid, Spain, September 12, 2018. REUTERS/Susana Vera 

Chon Gonzalez Cabezas prepares to engrave a book at Calero's artisan bookbinding and book restoration workshop in Madrid, Spain, September 12, 2018. REUTERS/Susana Vera 

Flowers are left next to the engraved names of victims as friends, relatives and victims commemorate the 20th anniversary of the IRA Omagh bombing at a ceremony in the Memorial Garden in Omagh, Northern Ireland August 12, 2018. REUTERS/Clodagh Kilcoyne 

Christos Galanopoulos, 55, engraves letters in the interior of a bell mould at the Galanopoulos bell foundry in Paramythia, Greece, June 19, 2018. REUTERS/Alkis Konstantinidis 

Christos Galanopoulos, 55, holds an engraving tool of the letter 'S' at the Galanopoulos bell foundry in Paramythia, Greece, June 18, 2018. REUTERS/Alkis Konstantinidis 

Christos Galanopoulos, 55, engraves letters in the interior of a bell mould at the Galanopoulos bell foundry in Paramythia, Greece, July 9, 2018. REUTERS/Alkis Konstantinidis 

Christos Galanopoulos, 55, engraves letters inside a bell mould at the Galanopoulos bell foundry in Paramythia, Greece, June 19, 2018. "There's a moral satisfaction that comes with doing something your grandfather did, your great-grandfather did, your great, great-grandfather did," Christos said. "It's a job that I love and I never plan to abandon it." REUTERS/Alkis Konstantinidis SEARCH "ALKIS BELLS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

An engraving of crucified Jesus Christ is seen inside a bell mould at the Galanopoulos bell foundry in Paramythia, Greece, June 19, 2018. REUTERS/Alkis Konstantinidis SEARCH "ALKIS BELLS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

An engraved logo of the Islamic Development Bank Group is seen at the door of the bank in Jeddah, Saudi Arabia May 31, 2018. Picture taken May 31, 2018. REUTERS/Reem Baeshen 

A Muslim man touches an ornament, engraved with verses from the Koran, tied to a chain at the shrine of Mir Syed Ali Hamdani, a Sufi saint, during the holy month of Ramadan in Srinagar May 24, 2018. REUTERS/Danish Ismail TPX IMAGES OF THE DAY 

A Muslim man touches an ornament, engraved with verses from the Koran, tied to a chain at the shrine of Mir Syed Ali Hamdani, a Sufi saint, during the holy month of Ramadan in Srinagar May 24, 2018. REUTERS/Danish Ismail 

An engraver works inside of the Colt booth during the annual National Rifle Association (NRA) convention in Dallas, Texas, U.S., May 5, 2018. REUTERS/Lucas Jackson 

Israeli soldiers sit next to a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun TPX IMAGES OF THE DAY 

Israeli soldiers stand next to a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

A man gestures as he stands in front of a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

Israeli soldiers are seen next to a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

An Israeli soldier stands in front of a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

Israeli soldiers sit next to a monument engraved with names of fallen Israeli soldiers, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

People point at names of fallen Israeli soldiers engraved at a monument, ahead of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

Israeli Prime Minister Benjamin Netanyahu arrives to a monument engraved with names of fallen Israeli soldiers, before the start of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

Israeli Prime Minister Benjamin Netanyahu arrives to a monument engraved with names of fallen Israeli soldiers, before the start of a ceremony marking Memorial Day in Jerusalem, April 17, 2018. REUTERS/Ronen Zvulun 

90th Academy Awards - Oscars Governors Ball - Hollywood, California, U.S., 04/03/2018. Gary Oldman holds his Oscar after getting it engraved. Picture taken March 4, 2018. REUTERS/Mario Anzuoni 

90th Academy Awards - Oscars Governors Ball - Hollywood, California, U.S., 04/03/2018 – Guillermo del Toro watches as one of his awards is engraved. REUTERS/Mario Anzuoni 

The casket of the late evangelist Billy Graham is seen engraved with the names of the inmates, who crafted it at Louisiana's Angola State Prison, as Graham lies in honor at the U.S. Capitol in Washington, U.S., February 28, 2018. REUTERS/Aaron P. Bernstein