A cat sits in front of a retro car owned by retired mechanic Mikhail Krasinets at an open-air museum of Soviet-era vehicles in the village of Chernousovo, Tula region, Russia August 28, 2018. Picture taken August 28, 2018. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY 

Retro cars owned by retired mechanic Mikhail Krasinets are seen in the tall grass at an open-air museum of Soviet-era vehicles in the village of Chernousovo, Tula region, Russia August 28, 2018. Picture taken August 28, 2018. REUTERS/Maxim Shemetov 

Supporters of the lesbian, gay, bisexual and transgender (LGBT) community hold placards as they celebrate the Supreme Court's verdict of decriminalizing gay sex and revocation of the archaic Section 377 law, during a march in New Delhi, India, September 24, 2018. REUTERS/Adnan Abidi 

Supporters of the lesbian, gay, bisexual and transgender (LGBT) community hold a placard as they celebrate the Supreme Court's verdict of decriminalizing gay sex and revocation of the archaic Section 377 law, during a march in New Delhi, India, September 24, 2018. REUTERS/Adnan Abidi 

Supporters of the lesbian, gay, bisexual and transgender (LGBT) community celebrate after the Supreme Court's verdict of decriminalizing gay sex and revocation of the archaic Section 377 law, at an NGO in Mumbai, India, September 6, 2018. REUTERS/Francis Mascarenhas 

A piece of molded clay made of local soil, known as ''turba,'' in seen in Kerbala, Iraq April 2, 2018. Picture taken April 2, 2018. REUTERS/Alaa Al-Marjani 

Pieces of molded clay made of local soil, known as ''turba'' are seen in Najaf, Iraq April 3, 2018. Picture taken April 3, 2018. REUTERS/Alaa Al-Marjani 

Pegeons are seen perched on windows in the old city of Damascus, Syria April 17, 2018. REUTERS/Ali Hashisho 

A painting hangs inside a home in the mountains near the village of Santo Domingo, in the Sierra Maestra, Cuba, March 31, 2018. REUTERS/Alexandre Meneghini SEARCH "SANTO DOMINGO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

18th century French flintlock muskets are displayed at the Palace Armoury in Valletta, Malta, March 23, 2018. REUTERS/Darrin Zammit Lupi 

A retired slot machine used for decoration is seen in Vienna, Austria February 27, 2018. REUTERS/Heinz-Peter Bader 

"Love Locks" are attached to an iron grill on a foot bridge at the historical part of Tbilisi, Georgia, February 23, 2018. REUTERS/David Mdzinarishvili 

"Love Locks" are attached to an iron grill on a foot bridge at historical part of Tbilisi, Georgia, February 23, 2018. REUTERS/David Mdzinarishvili 

A pair of shoes hang on the wall of a troglodyte house on the outskirts of Matmata, Tunisia, February 4, 2018. REUTERS/Zohra Bensemra SEARCH "BENSEMRA MATMATA" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A slate clock face waits to be restored at the workshop of the Cumbria Clock Company in Dacre, Britain, January 29, 2018. REUTERS/Phil Noble 

Silver cutlery is seen stored in a drawer at a private home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes silver cutlery at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes silver cutlery at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

Silver cutlery is seen stored in a drawer at a private home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

An antique silver tea set is seen at a private home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes silver cutlery at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

A woman polishes an antique silver candelabra at her home in Valletta, Malta, January 18, 2018. REUTERS/Darrin Zammit Lupi 

Silver rings are seen for sale at a shop in Islamabad, Pakistan January 16, 2018. REUTERS/Faisal Mahmood 

Silver plated cutlery is seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Caren Firouz 

Silver plated candlesticks are seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Caren Firouz 

Silver plated teapots are seen for sale at an antique store in Islamabad, Pakistan January 16, 2018. REUTERS/Caren Firouz 

Coin chutes of a historic pinball machine are seen at a collector's home in Vienna, Austria November 17, 2017. REUTERS/Heinz-Peter Bader 

A vintage Melbourne tram passes by Victoria's Parliament Building in Melbourne, Australia, June 13, 2017. REUTERS/Jason Reed 

Vinyards are seen from a "de Havilland Tiger Moth" biplane, which takes part in the Vintage Air Rally that ended in Stellenbosch , near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally prepares to land, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally prepares to land, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally prepares to land, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally flies above vinyards before landing, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

Aircrafts taking part in the Vintage Air Rally prepare to land, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

Aircrafts taking part in the Vintage Air Rally prepare to land, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

An aircraft taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally flies above vinyards before landing, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

A biplane taking part in the Vintage Air Rally lands, in Stellenbosch, near Cape Town, South Africa December 16, 2016. REUTERS/Mike Hutchings 

An aviation official and spectators wave as a plane flies over them during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A plane prepares to take-off from a dirt road used as a makeshift runway during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

Spectators react as a plane flies over them during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya TPX IMAGES OF THE DAY 

A biplane flies over spectators during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A biplane flies over a dirt road used as a makeshift runway during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A plane flies over spectators during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A biplane flies during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A biplane flies over spectators during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

A biplane flies over spectators during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya 

Biplane fly over during the Vintage Air Rally at the Nairobi national park in Kenya's capital Nairobi, November 27, 2016. REUTERS/Thomas Mukoya