6 a. DWI. 3 cent bicolour stamps (1. print, 1873) on letter from St. Thomas, cancelled with a stump postmark, and sent to St. Croix. Only a few similar letter used before 1878 are known. Cert. L. Nielsen.

6 a. DWI. 3 cent bicolour stamps (1. print, 1873) on letter from St. Thomas, cancelled with a stump postmark, and sent to St. Croix. Only a few similar letter used before 1878 are known. Cert. L. Nielsen.