Other countries–Stamps of Slovenian interest

Austria

,3,4,Complete small cover franked 3 + 6 kr.sent registered from Ptuj (5/6) via Maribor (5/6) to St. Lorenzen (6/6), where did not reach the addressee. Returned via Maribor (9/8) to Ptuj. Rare cover, however it is possible one stamp of the franking is missing, sold "as is".