I guess this is an Austrian medal or a spielmarke.??

My friend has 4 of them and we can not figure out why there is this rectangle counter-stamp in the Obverse.
in each one.
does anyone have any idea?
thanks you for your input
H
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That's not a counter stamp. It looks like a socket for a mount with some weld material left over. Perhaps it was a button or cuff-link.
IG: DeCourcyCoinsEbay: neilrobertson
"Numismatic categorizations, if left unconstrained, will increase spontaneously over time." -me
Agree. Can't be a counterstamp unless the token was resting on the reverse die when stamped, as there is no distortion on the reverse.
all 4 have this identical indent.