22.11.1915 registered letter from Harrisburg, Pennsylvania, USA to a Croatian soldier serving with Brigade Gericht (Brigade Military court) Tuzla , Bosnia. Lovely cover was used with logo "Croatian greeting from America" written above Croatian national emblem sided by USA and Croatian flags.
Interestingly 15 cent USA stamp was cancelled by black dot. At the back of the cover are Harrisburg and New York transit cancels.
There isnt any arrival cancel but multiple K.u.K Sarajevo Censor (Uberpruft) cancels are seen on a tape used to seal the letter after censorship, also a cancel was placed on the front.
This type of K.u.K Sarajevo censor cancel was used from 9.1915 till 05.1916.
Mail from USA to Croatian soldiers is very rare and completely stopped when USA entered the war on 6th. April 1917.