#209 1882 10c Brown, with #205 1882 5c Yellow Brown, Tied on Registered Cover to Croatia-Slavonia, Austria

"FALMOUTH, MAINE MAY 9, 1887" duplex cancel on registered cover to Laibach (Ljubljana), Province of Carniola, Kingdom of Croatia-Slavonia in the Austro-Hungarian Empire with FXNY1a(IV) registry label. The 5c stamp damaged at right, the 10c stamp with stained perforations.
This is a scarce destination for that period, especially for registered mail. Ljubljana is the capital of modern, independent Slovenia of the former Yugoslavia.