Lote 168

✉ GRAN BRETAÑA. 1863 (May 20). Cover to Canada West on "St. Nicholas Hotel/Broadway/New York' imprinted stationery, franked by GB 1s. green plate 1 tied by New York datestamp and sunburst cork cancellation. Reverse with Montreal datestamp (May 21). A remarkable cover, in all probability the GB stamp (green) was mistaken for the current Washington 10c. (also green) on despatch. The cover is matched with a regular US stationery usage similarly cancelled in 1863. A rarity in probably unique. SG 90.