Check the listing for details. VERY RARE Authentic President Joe Biden Green POTUS Seal Ireland Challenge Coin!. Condition: Used. Listed at 649.00 USD. This is an authentic White House issued challenge coin issued in April 2023 to staff that travelled with President Joe Biden on his trip to Ireland. This is an incredibly rare coin. Because of its bright green color and the design it is highly sought after coin among collectors. Please check out my other listings for more rare and authentic Presidential/White House items.This is an authentic White House issued challenge coin issued in April 2023 to staff that travelled with President Joe Biden on his trip to Ireland. This is an incredibly rare coin. Because of its bright green color and the design it is highly sought after coin among collectors. Please check out my other listings for more rare and authentic Presidential/White House items.