these are nice infos on the Perka, great.
I now have a nice little 6x9 prewar, pre-Technika Präzisionskamera on my workbench for restauration , it's brass label reads 'Linhof Linhof-Camera-Werk München'.
I guess its made before 1920, bellows still lighttight, mechanics still working great after over 100 years-
Additionally the is a series of identical precision cameras sold under the then well known brand '
Schaja', maybe this is related to the big photohouse ' Porst', too.
Schaja was known for its big camera related photo catalogues then, you can still find some of the Schaja catalogues on ebay.
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