71-year-old Joan Marantz and his wife Sidney Marantz have made this pin collection their passion since Montreal Olympics in 1976 and have been to 16 Games, including Winter Olympics, in total.
Each time at the Olympics, they will come and display their collection and trade new pins and at the last count, the Los Angeles-based businessman has more than 12,000 pins at his home.
"I've a huge case where I keep all my pins. If I put it on display then my whole house would be full of pins and my wife won't let me do that," Marantz said.
A fan of Olympics Games since he toured Rome in 1960 with his father, Marantz fell in love with pin collection in 1976.
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"We went to Melbourne with the family. There we're told by our tour group that people exchange pins. It's a tradition. So it all began there," he said.
Olympics came to his home town in 1984 and that's when his collection received a huge boost.
"We were involved with the organising committee and traded a lot. We got a lot of pins. Ever since we have been training at each Olympic Games."
"Hope I make it to Tokyo 2020," he signed off.