| This special issue was made in honour of The Boston Show, an international philatelic event. The original sheet featuring birds native to Kaulbach Island was overprinted BOSTON/1974. The top row of the sheet was removed during overprinting, resulting in a 5 x 5 sheet. | |
| 3,849 sets were sold, with 1150 used on first day covers. |
| Index | Return | |
