Model marks appeared on the Beirette in the "vsn" version only.
It is a version of the Beirette "v" with symmetrically rounded lens plate bottom, Ludwig Meritar 45mm f/2.9 lens in Priomat shutter with speeds 1/30-1/125, PC sync on lens, ornamental translucent plastic around lens, still has extra shutter release and metal "guard", hot-shoe. 
There are some versions during the manufacturing period:
- 1974 Ludwig Meritar 45mm/2.8 lens in Priomat shutter, PC sync on lens, translucent plastic around lens, no additional shutter release
- 1974 black plastic around lens