1916 Az S.M.Pb. F és S.M.S. Vág - Dunai Flottila hajók között futott levél, nagyon ritka hajópecséttekkel
Handwritten letter to the administration of the armed steamer S.M.S. "Vág" from the commanding officer of S.M. Patrouillenboot "I", dated in Orsova on January 7, 1916. Both seals on this document were in use for barely two months, from January to March 1916. S.M. PATROUILLENBOOT "F"
Kalis/Kohl No. 1 [type DR 2g] violet and S.M.PATROUILLENBOOT "F"
Kalis/Kohl No. 2 [type DL 1b] violet