Bermuda commemorative 50 dollars coin of 1977

Bermuda 50 dollars coin of 1977
Bermuda commemorative for the Silver Jubilee of Queen Elizabeth II
50 dollars of 1977, struck at the Royal Canadian Mint.
Five cent size proof gold coin (0.1172 oz pure gold).
Reverse: Bermuda Fitted Dinghy Race.
Low mintage of approximately 580 pieces.