"Small Petar" stationery overprinted with the 1945 Split provisional overprint is among the rarest of postal items of all 1945 provisional issues in the territory of former Yugoslavia. Only five used and two unused are known, so Croatian philatelists call it Croatian "Blue Mauritius".
1945 Split provisional issue, "Small Petar" stationery, sent from Split (21.VI.45) to Zagreb. Censor cancellation No. 3, Split. One of the five known "Small Petar" stationery. Ex Muller. Certificate Vilfan, Zrinjšćak.
1945 Split provisional issue, unused "Small Petar" stationery.
