At first glance it was an interesting item, but a detailed check showed that it is a fake - the date on the canceller is not possible. It is before the partisans came to Zagreb and much before this issue was released. The reason for forging is obvious: traveled stationery are much more valuable than non traveled ones.
UPDATE: OK, I could agree with those who allow the possibility that the wrong date is a mistake of a postal employee.
UPDATE: OK, I could agree with those who allow the possibility that the wrong date is a mistake of a postal employee.
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Fake or mistake? DFJ Zagreb stationery on eBay.
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Why 27.IV.45 cannot be genuine? Because partisans liberated Zagreb on 9.V.45 and
DFJ Zagreb local provisional issue was released on 25.VI.45.