1880, 5c green & grey, tied to folded cover by St. Thomas c.d.s. (15 Jan), to San Juan, Puerto Rico, endorsed “pr. Arno” in manuscript and struck with oval datestamp of forwarding agents J.F.D. Jurgens & Co, some ink erosion, vertical filing fold crossing adhesive, an uncommon single franking, which paid the rate for mail within 300 miles of the Danish West Indies.
