CANADA: Proof coin set of 10 coins in silver (0,925) commemorating Aviation / Powered Flight In Canada: The First 50 Years. Composed of 2x 20 Dollars (1990), 2x 20 Dollars (1991), 2x 20 Dollars (1992), 2x 20 Dollars (1993) & 2x 20 Dollars (1994). Inside official case of issue with CoA with no "02508" for the whole set and separate CoA for each of the coins apart from the last one. (KM 172+173+196+197+224+225+236+237+ 246+247). Proof.