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In 1923, the Polish treasury was short of gold and silver to back up its currency. The following stamps were issued in the nature of charity (fund raising) labels. They were purchased at face value and affixed to mail much in the manner of Christmas seals. The income received, was used by the treasury to buy gold and silver from abroad.
 1 Mk  2 Mk |
 3 Mk  5 Mk |
 10 Mk  25 Mk |
 50 Mk  100 Mk |
 500 Mk (dark blue and pink)  500 Mk (blue) |
 1000 Mk (blue and yellow)  1000 Mk (blue) |
 5000 Mk (carmine and yellow)  5000 Mk (carmine) |
 10000 Mk  25000 Mk |
 100000 Mk  250000 Mk (black and carmine) |
1 Million Mk
 2.50 groszy on 1 Mk  10 groszy on 1 Mk |
 20 groszy on 2 Mk 30 groszy on 3 Mk |
 50 groszy on 5 Mk 1 złoty on 10 Mk (red overprint) |
1 złoty on 10 Mk (black overprint)
 10 groszy (green)  20 groszy (dark blue) |
 50 groszy (red) 1 złoty (purple) |
Skarb Narodowy = National treasury.
Na zakup złota i srebra = For purchase of gold and silver.