"Super-Takumar 1:3.5/13"

[DBP]

I acquired a lens with this marking today. It is clearly a 135, but there is no indication of any prior mark where the "5" should be, and all the markings are engraved. Has anyone heard of lenses with the missing "5"?

 

[BradS]

may we see a photo of the mystery lens?

 

[AgX]

It would be interesting to learn how lenses were engraved.
Small series likely were engraved manually on a tuntable with a milling device coupled to a pantograph reading a stencil. So a letter or figure could have been missed. But how was it done one large scale?

 

[DBP]

 

[paul ewins]

Typos and missing characters in the engravings show up from time to time. Normally it seems to be just one unit here and there but there does appear to be a whole batch of 6x7 helicoid extension tubes that were engraved with HERICOID.

 

[Fixcinater]

I have an Olympus 38mm f/1.9 A to-s (Yes, the U is missing from Auto). Same as yours, no signs of damage...just a missing letter.

 

[ic-racer]

Is it a 13cm focal length rather than 13.5cm?

 

[DBP]

Is it a 13cm focal length rather than 13.5cm?
View attachment 200564

Not as far as I can tell. And no "cm" mark.