Watch List notes:

Isle of Man Proof Set 1987 Bicentenary of America's Constitution KM#PS42, a 4-coin set comprising Gold Halfcrown 1987 (Half Ounce) KM#187, 10 Crowns 1987 Silver 10oz. KM#188, 5 Crowns 1987 Silver 5oz. KM#177 and Crown One Ounce 1987 Palladium Proof APW 0.9949 oz. KM#176a, FDC in the Pobjoy Mint box of issue, no certificate, the box in distressed condition, the set now lists at $2250 in the latest Krause catalogue

Estimate: 1300-1700 GBP