If it's missing the edge lettering then I'll take it! :-)
Denomination: $20 (silver) and $100 (gold); Composition: Silver coins: 92.5% silver, 7.5% copper. Gold Coin: 58.3% gold, 41.7% silver; Issued from Start of Olympic coin program in 1985 to series completion in 1987. Olympics held in 1988.
This set of coins was an adventurous program by the Government of Canada and the Royal Canadian Mint
to raise funds in support of hosting the Calgary Winter Olympics and giving aid to those Canadians participating in the games. In similar style to the Montreal Olympics, the RCM
would introduce coins with a face value that had never been used before. The series was largely sold by subscription, with the public being asked to pay in advance and receive two coins every few months. The set was a little cheaper to buy this way and also came in a free 11-coin case. Those who did not wish to pay in advance could also order whichever coins they wanted at full price and received their coins in individual boxes.
The coins were the first in Canada to have lettering impressed into the edge of the coin. Said lettering was 'XV OLYMPIC WINTER GAMES - JEUX D'OLYMPIQUES D'HIVER.' Many of the coins are known to exist without this lettering. All types are quite rare and command high prices when available. The coins issues towards the end of the series are considerably scarcer as for one reason or another many purchasers did not complete their sets.