Now for my next question:
Early Zeiss Ikon accessory shoes were simple 15mm squares. Their "feet" are simple metal squares with no springs or grips. Sometime in the 1930s, Zeiss Ikon changed their shoes to the style familiar to any Contax II, III, IIa, IIIa, etc. owner. The shoe still has no bottom spring, but does have a spring located on its right side that presses against the side of a foot. The feet are thicker and have their own spring set into the middle.
When did the change to the more sophisticated version occur?? Did this affect all Zeiss accessories, or just Zeiss Ikon's? I own a 436/2 periscope finder that sports a foot that is in the Leica style with right-hand side "split." This is a Carl Zeiss Jena product. Was the fancier version of the foot confined to Zeiss Ikon products? Or was 436/2 marketed to any and all 35mm cameras?
I also own a 436/8 brilliant finder for a Super Ikonta B. It also as a simple foot with no springs or splits. What would that date to? Finish is plain black paint. No crinkle finish.
Again, thanks for any replies to these queries. WES LODER
