Here's a Belgian medal and a large silver coin from the Cook Islands. Both in oversized NGC holders and really cool I think!
The smallest Gold coin I own and the smallest diameter coin ever minted by the US Mint. The $1 Gold piece with No L DESIGNER: James Barton Longacre EDGE: Reeded DIAMETER: 12.70 millimeters WEIGHT: 1.70 grams MINTAGE: 1,000 MINT: Philadelphia METAL: 90% Gold, 10% Copper AUCTION RECORD: $69,000 • MS68 • 06-20-2007 • Stack's
Possibly for US circulation, but the 2 1/2 centesimo coin produced for Panama, popularity known as the Panama pill, takes the record for smallest. Struck in Philadelphia and 10mm in diameter.