Soccer Football - Brasileiro Championship - America Mineiro v Santos - Estadio Independencia, Belo Horizonte, Brazil - July 3, 2021 Referee Denis da Silva Ribeiro Serafi tosses the coin before the match REUTERS/Washington Alves

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum and DogeCoin are placed on PC motherboard in this illustration taken, June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, Litecoin are placed on PC motherboard in this illustration taken June 29, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, and Litecoin are seen in front of a displayed Binance logo in this illustration taken, June 28, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, and Litecoin are seen in front of a displayed Binance logo in this illustration taken, June 28, 2021. REUTERS/Dado Ruvic/Illustration

Representations of cryptocurrencies Bitcoin, Ethereum, DogeCoin, Ripple, and Litecoin are seen in front of a displayed Binance logo in this illustration taken, June 28, 2021. REUTERS/Dado Ruvic/Illustration

People toss coins into the Trevi Fountain without wearing masks as Italy lifts mandatory masks outdoors thanks to a decline in the coronavirus disease (COVID-19) cases and hospitalisations, in Rome, Italy, June 28, 2021. REUTERS/Guglielmo Mangiapane

Soccer Football - Brasileiro Championship - Juventude v Flamengo - Estadio Alfredo Jaconi, Caxias do Sul, Brazil - June 27, 2021 Referee Thiago Scarascati performs the coin toss as Juventude's Elton and Flamengo's Diego look on REUTERS/Edison Vara

Soccer Football - Brasileiro Championship - Juventude v Flamengo - Estadio Alfredo Jaconi, Caxias do Sul, Brazil - June 27, 2021 Referee Thiago Scarascati performs the coin toss as Juventude's Elton and Flamengo's Diego look on REUTERS/Edison Vara

Soccer Football - Brasileiro Championship - America Mineiro v Cuiaba - Estadio Independencia, Belo Horizonte, Brazil - June 17, 2021 Referee Moraes de Sousa tosses the coin before the match REUTERS/Washington Alves

A woman throws a coin in the Trevi fountain, as the region of Lazio becomes a restriction-free "white zone" where only masks and social distancing are required, in Rome, Italy, June 14, 2021. REUTERS/Yara Nardi

Cricket - Friendly Match - Birmingham Unicorns v Graces CC - Weoley Hill Oval, Birmingham, Britain - June 13, 2021 Birmingham Unicorns's Lachlan Smith tosses the coin as Graces CC's Stuart Anthony looks on Action Images via Reuters/Andrew Couldridge

Kerry Kraker, who is a part of the "Wall Street Silver" Reddit community and regularly invests in silver with his weekly savings, displays silver Krugerrand coins at his home in Seattle, Washington, U.S., June 12, 2021. Picture taken June 12, 2021. REUTERS/Lindsey Wasson

A 10-ounce silver bar and silver Krugerrand coins owned by Kerry Kraker, who is a part of the "Wall Street Silver" Reddit community and regularly invests in silver with his weekly savings, pictured at his home in Seattle, Washington, U.S., June 12, 2021. Picture taken June 12, 2021. REUTERS/Lindsey Wasson

U.S. President Joe Biden and first lady Jill Biden hold up challenge coins, as they depart RAF Mildenhall, ahead of the G7 Summit, near Mildenhall, Britain June 9, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden holds up a challenge coin, as he departs RAF Mildenhall, ahead of the G7 Summit, near Mildenhall, Britain June 9, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden holds up a challenge coin as he stands next to Sydney Glascock, Daughter of Command Chief of 100th Air Refueling Wing at RAF Mildenhall, ahead of the G7 Summit, near Mildenhall, Britain June 9, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden and first lady Jill Biden hold up challenge coins, as they depart RAF Mildenhall, ahead of the G7 Summit, near Mildenhall, Britain June 9, 2021. REUTERS/Kevin Lamarque

The 1933 Double Eagle coin is seen encased during a media preview before auction at Sotheby's in New York City, U.S., June 4, 2021. REUTERS/Shannon Stapleton

The 1933 Double Eagle coin is seen encased during a media preview before auction at Sotheby's in New York City, U.S., June 4, 2021. REUTERS/Shannon Stapleton

A CoinCloud Bitcoin crypto currency ATM machine is pictured in a shop in Union City, New Jersey, U.S., May 19, 2021. REUTERS/Mike Segar

Akihiro Takahashi, 34, an owner and chef of a Japanese restaurant, poses for a portrait while visiting Koganeyu Coin Laundry, a laundrette in Tokyo, Japan, May 7, 2021. Takahashi would like the Games to take place but not this year. He worries about the health risks from foreign athletes and officials entering Japan, and mourns the overseas tourists who would have packed his Japanese restaurant in a usual Olympics year. "I think it may be hard for Japanese people to be pleased about these Games in their hearts," he said. REUTERS/Kim Kyung-Hoon SEARCH "KYUNG-HOON PORTRAITS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

An Iraqi man tosses a coin while playing a traditional game of Mheibes, during the holy month of Ramadan, at Al-Shaab International Stadium?in Baghdad, Iraq May 5, 2021. Picture taken May 5, 2021. REUTERS/Teba Sadiq

A view shows a newly-issued 1,000 Kazakh tenge commemorative silver coin, that features a golden profile of Kazakh former President Nursultan Nazarbayev, in Almaty, Kazakhstan April 30, 2021. REUTERS/Mariya Gordeyeva

A view shows a newly-issued 1,000 Kazakh tenge commemorative silver coin in Almaty, Kazakhstan April 30, 2021. REUTERS/Mariya Gordeyeva

A view shows a newly-issued 1,000 Kazakh tenge commemorative silver coin, that features a golden profile of Kazakh former President Nursultan Nazarbayev, in Almaty, Kazakhstan April 30, 2021. REUTERS/Mariya Gordeyeva

A view shows a newly-issued 1,000 Kazakh tenge commemorative silver coin, that features a golden profile of Kazakh former President Nursultan Nazarbayev, in Almaty, Kazakhstan April 30, 2021. REUTERS/Mariya Gordeyeva

Mudlarks Joe Allen and Javi Valero scavenge for small coins and other bits of shipping history on the River Thames opposite the financial district of Canary Wharf, in London, Britain April 25, 2021. Picture taken April 25. REUTERS/Kevin Coombs

Mudlark Joe Allen scavenges for small coins and other bits of shipping history on the River Thames opposite the financial district of Canary Wharf, in London, Britain April 25, 2021. Picture taken April 25. REUTERS/Kevin Coombs

U.S. President Joe Biden gives a coin to Logan Evans, son of late U.S. Capitol Police officer William "Billy" Evans, during a memorial service as Evans lies in honor in the Rotunda at the U.S. Capitolin Washington, DC, U.S. April 13, 2021. Drew Angerer/Pool via REUTERS

U.S. President Joseph R. Biden Jr. gives Logan Evans, son of U.S. Capitol Police officer William Evans, a Challenge Coin during the funeral of his father in the Capitol Hill’s Rotunda in Washington, DC, U.S. April 13, 2021. Amr Alfiky/Pool via REUTERS

U.S. President Joe Biden gives a coin to Logan Evans, son of the late U.S. Capitol Police officer William "Billy" Evans during a memorial service as Evans lies in honor in the Rotunda at the U.S. Capitol in Washington, DC, U.S. April 13, 2021. Drew Angerer/Pool via REUTERS

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 8, 2021 Me Too Please ridden by Rachael Blackmore are paraded in front of empty stands after winning the 5:15 Goffs UK Nickel Coin Mares’ Standard Open NH Flat Race Pool via REUTERS/Peter Powell

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 8, 2021 Me Too Please ridden by Rachael Blackmore are taken to the parade ring after winning the 5:15 Goffs UK Nickel Coin Mares’ Standard Open NH Flat Race Pool via REUTERS/Peter Powell

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 8, 2021 Runners in action during the 5:15 Goffs UK Nickel Coin Mares' Standard Open NH Flat Race Pool via REUTERS/Peter Powell

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 8, 2021 Me Too Please ridden by Rachael Blackmore win the 5:15 Goffs UK Nickel Coin Mares’ Standard Open NH Flat Race Pool via REUTERS/Peter Powell

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 8, 2021 Runners in action during the 5:15 Goffs UK Nickel Coin Mares' Standard Open NH Flat Race Pool via REUTERS/Peter Powell

Soccer Football - Champions League - Quarter Final First Leg - FC Porto v Chelsea - Ramon Sanchez Pizjuan, Seville, Spain - April 7, 2021 FC Porto's Pepe and Chelsea's Cesar Azpilicueta with the match officials during the coin flip before the match REUTERS/Marcelo Del Pozo

Cricket - Third One Day International - India v England - Maharashtra Cricket Association Stadium, Pune, India - March 28, 2021 England's Jos Buttler and India's Virat Kohli after the coin toss REUTERS/Francis Mascarenhas

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

A view shows Russian rouble coins in this illustration picture taken March 25, 2021. REUTERS/Maxim Shemetov/Illustration

Commemorative two euro coins for the 200 years since the Greek War of Independence, are struck at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

An employee of the National Mint checks commemorative two euro coins for the 200 years since the Greek War of Independence, in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

Commemorative two euro coins for the 200 years since the Greek War of Independence, are struck at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

An employee of the National Mint works on the die of a commemorative ten euro coin for the 200 years since the Greek War of Independence, depicting former Greek prime minister Eleftherios Venizelos, in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

The design of a commemorative ten euro coin for the 200 years since the Greek War of Independence, depicting former Greek prime minister Eleftherios Venizelos, is sculpted at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

Commemorative ten euro coins for the 200 years since the Greek War of Independence are displayed at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

Commemorative ten euro coins for the 200 years since the Greek War of Independence are struck at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

The die of a commemorative ten euro coin for the 200 years since the Greek War of Independence, depicting former Greek prime minister Eleftherios Venizelos, is cut by a milling machine at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

A commemorative ten euro coin for the 200 years since the Greek War of Independence, depicting former Greek Prime Minister Eleftherios Venizelos, is displayed at the National Mint in Athens, Greece, March 19, 2021. Picture taken March 19, 2021. REUTERS/Alkis Konstantinidis

A Christa McAuliffe coin is displayed before it is given to U.S. First lady Jill Biden during her visit to Christa McAuliffe School in Concord, New Hampshire, U.S., March 17, 2021. Susan Walsh/Pool via REUTERS

U.S. First lady Jill Biden holds a Christa McAuliffe coin she received as she speaks during a visit at Christa McAuliffe School in Concord, New Hampshire, U.S., March 17, 2021. Susan Walsh/Pool via REUTERS