What mount does my MAMIYA SEKOR E 200mm F4 has?

I have this mid tele lens but i can't find a right adapter to fit it to my nikon d3000. Some say it has a M42 mount and some say otherwise. Help please! Thanks

this is my lens

http://www.thecamerasite.net/08_Accessories_Lenses/Pages/lenses.htm

ps, i personally think i has a K mount, any comments from Pentax users out there?

You do know, don't you that you will not be able use the light meter using that lens even if you do get it to attach to your camera.

Mamiya was a clone to the old Pentax Spotmatic which used the M42 screw mount. You should be able to tell the difference between a screw mount and K-mount (which is a bayonet mount) was introduced long after Mamiya got out of the 35 mm camera making business

Not an M42 for sure, it is a bayonet, although I don't recognize the bayonet off the top of my head. The 10 electrical connections to the body should be enough to identify the mount, for someone.

EDIT: OK, I went off and ID'd the lens my self… The Mamiya E series is for their long-extinct line of 35mm cameras. That includes your 200mm f/4.

http://www.thecamerasite.net/01_SLR_Cameras/Pages/mamiyaze.htm