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I can give you some information. The movement was made by Felsa, between 1942 and the 60s
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Zeb
May 03, 2019 01:46PM
Bidynator was a brand name for the first series of watch movements with bi-directional winding, made by Felsa. It looks like the movements were sold to other brands, who put their names on the rotors. Examine the plates under the rotor and see if you can find an ebauches mark like this:

If so, there should be a number near it, which should be the caliber number. Like this:





https://www.watch-wiki.net/index.php?title=Bidynator



-----
Dan "Zeb" Zsebehazy
Dan's really, really out of date watch website


Subject Author Views Posted
What have I got? I need help! fpage77 322 April 08, 2019 10:26PM
Looks cool Thumbs Up (n/t) MarkKershaw 81 May 01, 2019 05:10AM
I need help! It stopped working.. fpage77 97 April 29, 2019 06:09PM
I have used the guy in the link below. JohnSNY 97 April 30, 2019 08:10AM
Bump it against your palm once or twice. BF Hammer 87 April 29, 2019 06:42PM
Already done the bumping and had been working for a month. (n/t) fpage77 85 April 29, 2019 06:58PM
Is that the final conclusion? (n/t) fpage77 117 April 11, 2019 05:33PM
If you ever take the back off, get a good high res. photo of the movement. JohnSNY 122 April 11, 2019 05:41PM
Going to get it fixed. This is movement. Trying to date still. Jpeg Attachments fpage77 85 May 03, 2019 08:38AM
I can give you some information. The movement was made by Felsa, between 1942 and the 60s Jpeg Attachments Zeb 89 May 03, 2019 01:46PM
You're the man Dan! (n/t) JohnSNY 78 May 03, 2019 04:50PM
A three–sided pylon: used as part of the main gateway to the New York World's Fair, 1939 URL solex 149 April 10, 2019 05:30AM
Saw that when searching brand. (n/t) fpage77 123 April 10, 2019 05:55AM
"Automatic" and "waterproof" are clues to its age. JohnSNY 129 April 09, 2019 06:00AM
+1 for the same reasons. BF Hammer 131 April 09, 2019 04:31PM
Interesting. fpage77 125 April 09, 2019 05:24PM
I have several vintage '30s and '40s watches that are VERY accurate also. (n/t) jhargrave 127 April 09, 2019 05:58PM
It looks like a generic Swiss watch. Is it about 30mm diameter? jhargrave 133 April 09, 2019 12:07AM
Re: It looks like a generic Swiss watch. Is it about 30mm diameter? fpage77 127 April 09, 2019 12:49AM
The hands look a little like one I've got too. It was a WW2 vintage. I'll post a pic jhargrave 126 April 09, 2019 01:00AM
My WW2 watch, about the same size. (n/t) Jpeg Attachments jhargrave 157 April 09, 2019 05:23AM



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