I have four Canadian Dollars, 1 Singapore dollar and the other I have no idea. Honestly, I don't know much of these coins except the internet search. I have no idea of the demand as well. thought, if you guys collect these kind of stuffs, send me offer by PM. I will accept the highest offer. Not ready for Auction yet. There are so many auctions now a days, some are still running. 1. 1949 Canada Dollar (80% Silver) - 23.33 gram 2. Canada: 1999 $1 225th Anniversary of the Voyage of Juan Perez Proof Silver Dollar Coin - 92.5% Silver, 25.175 gram 3. 1989 CANADA SILVER PROOF DOLLAR FLEUVE MACKENZIE RIVER - 50% Silver - 23.33 grams 4. Canada: 1984 $1 Toronto Sesquicentennial Proof Silver Dollar Coin - 50% Silver - 23.33 grams 5. Singapore 10 Dollar (50% Silver) - 1oz 6. ? (but one troy ounce) Thanks.