CISNA, 1919 Pd6, provisional Postage Due overprint
From the Fischer catalogue, for review purposes.


There was a lack of Postage Due stamps in Southern Poland in 1919 so the Ministy of Posts & Telegraphs authorised local Post Offices to overprint their stocks of definitive stamps for this use. Their are at least 167 types, many of them completely philatelic. Some were pre-printed in sheets & used as needed, others were only overprinted on cover so only used copies are known.
As well as being used for regular Postage Due on mail, they were also used on Money Orders & Parcel Receipts
Money Order from Lublin, 2 VI 1919, to Krakow 4 VI 1919, for 500 Korony with 50hal PKL eagle issue overprinted "porto"
Front

Back

Note the "Lublin" & "Krakow" postmarks are war-time Austrian KUK types which have had the Austrian sections removed, this was a quick way of getting Polish cancellers