Prince Charles, the Prince of Wales, has only appeared on two British Coins to date.
1. The 1981 25 Pence (Crown) coin commemorating his marriage to Lady Diana Spencer.
2. The 1998 Five Pound (Crown) coin commemorating his 50th Birthday.
The 1977 coin to which you possibly refer is the Silver Jubilee of Queen Elizabeth II commemorative 25 Pence (Crown) coin.
50 pence.
In 1977
1977
The British 1977 cupro-nickel 25 Pence coin, formerly known as a Crown, is a commemorative issued for the Silver Jubilee of Queen Elizabeth II and is collectible.
a grandmother
Queen Elizabeth II Coronation Award was created in 1953.
The coins of many of the 50 Commonwealth countries might have the legend - ELIZABETH II DG REG FD in one form or another. If you got the coin in change, it will be worth whatever is inscribed on it.
99p
Money
The cast of Royal Heritage - 1977 includes: Queen Elizabeth II as herself Huw Wheldon as Himself - Presenter (1977)
Check the date on that coin again. Elizabeth II wasn't featured on coins until 1953.
The cast of Jubilee and Beyond - 1977 includes: Queen Elizabeth II as herself Prince Philip as himself