Canada Coin Exchange Canada Coin Exchange Auction – Rosen, Al and Shillingworth, Bob (October 4, 1969) Canada Coin Exchange Auction Catalogues (May 1950–March 1952) Canada Coin Exchange Auction Catalogues, November 1952–April 1958 Canada Coin Exchange Auction Catalogues, September 1958–October 1966 Canada Coin Exchange Subscribers’ Bulletin (1952–1956) Canada Coin Exchange Subscribers’ Bulletin , March 1957-July 1959 Canada Coin Exchange Subscribers’ Bulletin, October 1959–July 1970