| Known Versions |
| A/R Version |
KR Serial Range |
Changes Between Versions |
| 1 |
600065-630941 |
M42 screw mount, internal diaphragm release, film advance lever without knob, black plastic ring covering the film speed reminder ring, black "DRESDEN" printing on top plate. |
|
646740-651913 |
No "DRESDEN" printing. |
|
655585-675531 |
Leather embossed "MADE IN G.D.R." . |
|
653794-750875 |
Leather embossed "1 MADE IN G.D.R." . |
|
754987-807789 |
Serial numbers larger. |
|
823442-830916 |
Black faceplate. |
|
C 831121-C 876855 |
Serial number beginning with "C" (C means Certo, the manufacturer). |
|
C 877131-C 885122 |
Fabric leatherette as with EXA 1c. |
|
C 880241-C 886382 |
Black top plate, first series with small screws and rounder heads for affixing the top plate, second series has larger screws with a more even surface. |