I recently acquired these cards, that I believe are Postal Savings cards of some sort.
They all have the same printed, stamp-like image on them of what appears to be an Austrian stamp. Much the same as Austrian stamp of the late 1890's/early 1900's.
There are 8 different ones, in 8 different languages.
Can anyone confirm what they are exactly?
How were they used?
Does anyone have a used one, of this variety, as an example?
I tried googling various search terms, but I am coming up empty.
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Reverse side
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