TV lens?

[tired]

I got hold of a couple of these lenses for cheap ($20) and I want to try them out on the GH1.

I'm trying to find out something about them but there's no brand - The only wording is:

TV Zoom Lens 10 ~ 120mm 1:2

There is manual control of focus & zoom but not aperture (the iris is closed and within the housing at the back) if I can find the pin outs I may be able to open the iris and maybe even adjust.

I'm waiting on a C mount adapter but I need to find out a little more about them - any ideas? anyone seen or played with something similar?

 

[Razz16mm]

Those look like lenses for older generation auto-iris security cameras. Is there a brand label on them anywhere?

 

[tired]

no brand at all

 

[editguy]

I also have one that says TV Zoom, and mine is also 10 ~ 120mm, but mine is branded Canon. Mine came off a Panasonic studio camera and it's a good lens. I used it in the high school TV broadcast class that I teach. I would like to find an adapter and give it a try if I can find an adapter.