A little lens help!

[TheRaven]

Hoya HMC Wide-Auto f=28mm 1:2.8 by Raven Photography by Jenna Goodwin, on Flickr

Hoya HMC Wide-Auto f=28mm 1:2.8

Bought this from eBay for the pricey sum of £8 as it said not sure if it works. The aperture blades move smoothly, focus ring is slightly  loose but still smooth. I was wondering if anyone knew what the mount is? It was advertised as M42, but isn't!

Any ideas?


Hoya HMC Wide-Auto f=28mm 1:2.8 by Raven Photography by Jenna Goodwin, on Flickr


Hoya HMC Wide-Auto f=28mm 1:2.8 by Raven Photography by Jenna Goodwin, on Flickr

[DubFan]

Looking at this last photo showing the bottom of the lens, right by the button (which you would probably press to release the lens), it says "OM".

So I would suggest that it's an Olympus OM lens.

Hoya HMC Wide-Auto f=28mm 1:2.8 by Raven Photography by Jenna Goodwin, on Flickr

Here's a photo of the Olympus OM mount to compare to:

Olympus OM mount by camerawiki, on Flickr