531/16 last version of the super ikonta - the same as the model IV but with the inbuilt meter making it a little more compact.  Considered by some (including John who uses the same camera himself!) to be the best folding 6X6cm camera made.  Has the top of the line coated Tessar lens and synchro compur shutter with speeds down to 1sec.  Very compact when folded.  Excellent condition.

Zeiss Super Ikonta III 6X6cm RF