Polyskop stereo Plate cameras 1927-1931
From the Ica company Zeiss Ikon inherited the Polyskop camera for the 4,5x10,7cm/6x13cm stereo plate formats.
The picture above is from the catalog C 292 b, dated October 1928.
Even during its short production/selling time as a Zeiss Ikon camera the Polyskop changed from Bestellnummer.
The next table lists the original Bestellnummer starting in 1926 next to the newer one, late 1928/early 1929.