1945 SPLIT, Overprint on partly printed stamp

Check out this attractive error...

1945 Split local provisional issue, No. 7 on pelure paper, 20 kn / 3.50 kn, block of four (positions 9-10 / 19-20) with exceptionally rare and attractive error of overprint on partly printed base stamp.

There is no print on the backside, so this is not a classic paper foldover error. Therefore, I assume that a piece of trash paper accidentally came in between the sheet and the printing plate. Such items are rare because they should passed two inspections: first after the base print and second, four years later, after the overprint.

A possible situation...

1945 DB Laibach, Famous Slovenians

The series depicts six famous Slovenians (click on name):

Simon Gregorčič, Janez Vajkard Valvasor, Primož Trubar

Ivan Tavčar, Ivan Cankar, Anton Martin Slomšek

1945 German occupation of Laibach, unreleased issue, complete sheet in red-brown color. Certificate France, FES.

1945 MARIBOR, Slanting overprint

All 1945 Slovenian provisional issues were overprinted in enviably high quality. That is a reason for a small number of errors and specialties that are available today. Therefore, I was pleasantly surprised when I found the entire sheet of Maribor issue with very large slanting overprint.

1945 Maribor local provisional issue, entire sheet of 12pf (Mi. 8) with large slanting overprint.

Extract of the overprint.

Lower right detail, showing one overprint extended to four adjacent stamps.

1945 SPLIT, Unique AR letter

At that time, a mail with advice of receipt (AR) was not on the list of the available post office services, and therefore has not been used. The only known exception was shown at the Croatica 2015 exhibition as a part of the Greatest Rarities of Croatian Philately display.

1945 Split local provisional issue, registered letter with advice of receipt (marked with hand as "Povratnica"), properly franked with 60kn (20kn for letter, 30kn for registration and 10kn for the advice of receipt), sent from Dubrovnik (2.VI.45) to Osijek. The only known AR letter using stamps of Split provisional issue.