Dallmeyer f/ 1.5 lens

I have a small lens I'm trying to find out something about but the general web info doesn't describe it close enough. It's marked Dallmeyer England and f/1.5. The iris closes to f/22, I think... I'll have to look at it again. The threaded rear is about 25mm across... My guess it's an old 16mm lens. Anyone know something about these?

-BG

The rear thread is the so-called C(iné) Mount. It’s a one-inch, 32 threads-per-inch, affair. Introduced for 16-mm. film motion-picture cameras with the flange focal length of 0.69" (distance flange face to film).

Your Dallmeyer is a Kino-Plasmat type lens, i. e. six lenses in four groups (2-1-1-2).

I’d like to see a picture of and from the lens.

So long, S.