Hi @art deco
Thank you very much for raising these questions,
which, despite involving official information from the Austrian Mint,
remain somewhat unclear.
Case 1:
Two possible theories might explain this:
First theory:
Two engravers were actually involved in the design of the 2 and 5 Groschen coins:
• Philipp Häußler designed the obverse of both coins
• Rudolf Placht designed the reverse of both coins
Second theory: (which I personally find more likely)
Philipp Häußler designed both the obverse and reverse of the two coins.
Rudolf Placht may have been credited because he either approved the design,
suggested adjustments, or collaborated in some minor modifications.
Why do I say this?
Because, as far as I know, Rudolf Placht — in addition to being a sculptor and medalist —
was also the Chief Engraver of the Vienna Mint from 1916 to 1941.
Meanwhile, Philipp Häußler was a highly versatile designer within the Art Deco movement,
and made a significant contribution to Austrian numismatics by designing
low-denomination coins of the First Republic (1925–1938).
Another relevant detail is that Philipp Häußler studied under
important professors such as Franz Čižek, Hermann Herdtle,
and Josef Hoffmann.
These coins reflect the Art Deco style commonly used by Häußler,
althought also happened to be the dominant aesthetic in European coinage
during the interwar period.
Final conclusion??:
Philipp Häußler Philipp designed these three art deco coins below,
which share characteristic designs and styles,
under the supervision/technical assistance of Rudolf Placht
who was also the Chief Engraver of the Vienna Mint from 1916 to 1941.
N#5319
N#1944
N#5318
***
Case 2:
As for the 5 Groschen coin (1948-1994), you’re absolutely right to question
Adolf Hofmann’s involvement, given that he died in 1930. The Austrian Mint listed
him as the reverse designer, but it’s likely the design was **based on earlier work**
perhaps even created for any aborted Schilling reform proyect in the early 1920s.
So yes, it’s plausible there’s confusion with Alfred Hofmann,
especially since he was alive and active in 1948. But for now, Mint archive a
still list **Adolf Hofmann** as reverse designer.
N#744
I’ll keep digging into whether this might have been a reused or posthumously applied design.