Coin collectors and aviation enthusiasts, this is something special! This 1990 Royal Canadian Mint $20 coin features the Avro Lancaster bomber and is part of their sought-after Aviation Series. The coin is made from .925 sterling silver and weighs a full ounce, plus it's double-struck with a proof finish that makes it incredibly detailed. The main design shows the Lancaster in flight, but the really cool part is the 24-karat gold overlay cameo featuring John Fauquier, who was Canada's WWII Bomber Command Leader. It comes in this custom aluminum case that's shaped like an airplane wing - perfect for display. This particular coin (it's the second one in the first Aviation Series) has become the most popular and collectible of all 20 aviation coins the mint issued between 1990 and 1999. The combination of sterling silver, gold overlay, and the historical aviation theme makes this a really impressive piece. Whether you're building a Canadian coin collection, love military aviation history, or just appreciate beautiful commemorative coins, this Lancaster coin is a fantastic addition to your collection. The quality of Royal Canadian Mint products is always top-notch, and this proof coin is no exception.