厦门书信馆三角形中英双语样戳; 不同尺寸信封两件, 各盖厦门书信馆三角形中英双语样戳一枚, 分别为橙红色及鲜蓝色. 罕见及保存良好.Amoy Postmarks Proof Strikes Triangular Amoy Local Post: Two envelopes bearing proof strikes of this distinctive postmark in orange-red and bright blue respectively. The envelopes are in slightly different sizes and from a cream coloured stock. Fine and rare. Photo