Cynthia writes: I have two coins that I would like information about. The first is a 1975 Gibraltar uncirculated gold L100 coin. It has Queen Eliz II on the front and a castle on the back. The second is a gold coin with Queen Eliz II on the front with 1971 and on the back it says Mauritius Independence 200 rupees. Thank you.
The 1975 Gibraltar £100 is a low mintage coin commemorating the 250th Anniversary of the Introduction of British Sterling to the Island. Only 1,625 coins were minted. Unfortunately, at the moment, there are more coins than collectors for this very attractive modern piece. It has a high gold content, .9170 oz of pure gold and should bring at least a 10% premium over that.
The 1971 Mauritius Independence commemorative is also a low mintage coin, 2,500 minted, but it too brings only a 10-15% premium over gold (.4587). Both of the above coins are beautiful and well designed. Hold on to them, they are sure to be worth more in the future.