Struck through foreign object, most probably metallic.
Interesting and potentially valuable possible error, but,
I cannot entirely rule out the possibility of accidental deliberate post strike damage, even at the Austrian Mint.
1973:
Interestingly, this was the last year that Austria* issued silver coins into general circulation.
U.S*. and Germany* were the last countries to issue silver coins into general circulation in 1974, with the 5 Mark*, until
bimetallic silver $10 and $20 Pesos coins were issued for a short time in the 1990's by Mexico.
* Austria 10 Schilling: 0.640 fine, 0.1543 ASW
* U.S. Half Dollar: 0.400 fine, 0.1479 ASW
* Germany 5 Marks: 0.625 fine. 0.2250 ASW
Silver coins continued to be commonly avaiable from banks at a permium in Austria and Germany after 1974, but were not issued into general circulation, their face value equivalents replacing them by base metal coinage.
Interesting and potentially valuable possible error, but,
I cannot entirely rule out the possibility of accidental deliberate post strike damage, even at the Austrian Mint.
1973:
Interestingly, this was the last year that Austria* issued silver coins into general circulation.
U.S*. and Germany* were the last countries to issue silver coins into general circulation in 1974, with the 5 Mark*, until
bimetallic silver $10 and $20 Pesos coins were issued for a short time in the 1990's by Mexico.
* Austria 10 Schilling: 0.640 fine, 0.1543 ASW
* U.S. Half Dollar: 0.400 fine, 0.1479 ASW
* Germany 5 Marks: 0.625 fine. 0.2250 ASW
Silver coins continued to be commonly avaiable from banks at a permium in Austria and Germany after 1974, but were not issued into general circulation, their face value equivalents replacing them by base metal coinage.





















