Victoria Australia 1905-13 Watermark Crown over Double-Lined A 1/2d Blue-Green Perf 12 1/2 on 1908 long envelope First Australian Exhibition of Women's Work 1907

1905-13 Watermark Crown over Double-Lined A 1/2d Blue-Green Perf 12 1/2 (faulty) on 1908 long envelope with unsealed flap printed for First Australian Exhibition of Women's Work, Melbourne, 1907 used in Melbourne by the Manager of the Exhibition. Rare