Porst Tele MC auto D ⨍2,8 135mm (silver barrel)

[cyberjunkie]

Some time ago i found on Ebay a job lot of 35mm lenses, of various brands and in different conditions.
On of them is a Porst Tele MC auto D ⨍2,8 135mm, in silver trim.
No need to post pics, here you can find an identical one:
http://m42lens.com/m42-lens-database/655-porst-tele-mc-auto-d-135mm-f-2-8-22-v2

I tried it in the worst conditions: at night with strong artificial lights, of various kinds/colors.
The lens flares badly, but not more than any other similar (cheap) tele of the same vintage.
Sharpness and contrast (with no strong lights inside the picture) are more than satisfying.
The objective has a slide-out sunshade, very decent build, and a useful A/M switch.

I tried to guess which japanese maker produced the lens.
I know that some Porst lenses, with identical (or almost identical) names, were made by different companies. Two of them were Cosina and Tomioka.
My educated guess, for this specific model, is SUN.
What do you think?
Any experience with this lens (either silver or black trim, they look identical)?

Cheers

Paolo

[Oldhand]

I don't have, nor have I seen this lens.
However it does resemble some of the SUN lenses that I have had and seen, so you may be correct in its parentage.
OH