Pictures of Underside bumper rotors needed >>

I have two containers of bumper rotors I got in parts lots, but don't which movements they fit.

Each caliber. Omega changed the weight on the underside

If you have a movement sitting in parts. I would appreciate it you can post an underside image and caliber.

In order to prevent repeat images. Please check each post (if any) to see if what you have hasn't been posted yet

Thanks

DON

Caliber number won't be shown on the rotors. I meant that if you have the complete movement. Then you would know the caliber

I'm curious if each design offered any better winding capabilities

Thanks

DON

This is interesting. unfortunately I don't have a spare Bumper movement flying around, and will not take my 2577-26 apart.
in the Omega AJTT book you can see the "top side" of the slightly different rotors. the 330, 331340, 341 and 350 have the 3 small holes on the top. the others like my 354 have the screws from the top. If I look at the picture from Canuck, the second from the left seems to be the version with the 3 smaller holes. The two on the right seem to be the versions for the 3 screws which is the range from 332, 333, 342-344 and 351 to 355. That is, if the images in the book are right 😀 Funny thing is that the 350 in the middle of the range is shown with the 3 smaller holes...

Took a quick pic of the page in "a journey through time"...
If you look closely then you can see that the writing on the bumper rotor is not always the same, maybe that might help to at least narrow it down to a fewer number of calibers? Some of them were chronometer certified.
Also the dimensions, (length of the "ends") is not always the same...

This is what I found and also noticed the tips for the springs at the end of the rotors varies in widths.

One is marked

I'll do a Ebay movement by movement search and see whats parts movements are up and in pieces

Thanks

DON