Bosnia, Turkish post, vorunners

,Av 38 II (2),Bilingual telegram postal money transfer form (German & Italian) franked with 20 kr. (fine impression) for the transfer of 60 Gulden from Mostar to Vienna (JUN 79). Cancelled by "Feldpost - Expositur, No. 18, 29/5, 79". Very rare form, vertically creased in the middle. This very item is reproduced in Ferchenbauer manual (Book IV, page 174.)