today a nice Jupiter 11A 4/135 in black arrives here. It's for M42 screw mount. I have never seen one before. How often were they built? Serial number starts with 77, so it seems to be from 1977. Manufacturer is KOMZ.
Lot of them about, good lens nice and sharp, mine is 1974. It was replaced by Jupiter 37A, all apparently made by Komz and the end is interchangeable for m-39, m-42, nikon f and pentax k, mine is currently fitted with m-39 end for my early zenits
Samsung GX-10,too many Russian Lenses, A lot of Zenits, an Almaz 103 a few Yashica,and finally a Minox35GT
I have one too, s/n 77xxxx. It has the closest focusing distance of about 1 meter, while Jupiter 37A focus down to 1.2 meter.Earlier silver version focus down to 1.4 meter.:)