Hi gang
I think this is a Duo Wind. Hands look slightly different than those i've seen, but? It's a Swiss 9AB, 17 jewel, date code 1950 on movement and case back. Domed acarylic crystal, 10k RGP case/back. SN on case 1947838 (for what ever that's worth). Was serviced when I took the pictures. (my watch guy hates me coming in to his shop and peering over his bench to take photos- and they don't turn out as good as at home anyway). I'm a gonna list it in the database if the name sounds right.
Thanks
Will
Nice. That's a Felsa Bidynator in there, an F705. That would jive with the model name.
Thanks Rob
I'll take your word for that, and then seceretely go try to look it up on the internet so you won't know I don't know what a Felsa Bidynator is (at least not the F705 anyway.... :).
I would guess this is denoted by the little Y like insignia. I've seen them on other "both way" auto winders.
That symbol is supposed to be a downward and left pointing arrow, to show how to unlock the rotor. I like these old Autos.
I was under the impression that the 9 AB was a Felsa 415
The F415 had a sweep second, and was based on the F410. They are slightly larger (10.5'''-11.5''') than the F705, which is based on the F700. (9ABC, 9.25''') The 700 series had the more visible pawl winding wheel, seen on the right.
The 11AAC was a Felsa 415. The 410-415 was the forerunner of the well known 690-699 series.