| Author | Message | ||
     Herrk Junior Member Username: Herrk Post Number: 18 Registered: 03-2007 Rating: N/A |
Calling the experts! I own a JLC Uniplan "Etrier" Ref. 382 (amusingly Zaf send me #382 of his great JLC-book, thanks Zaf) which is fitted with a caliber that looks like some 11L to me. But what excactly is it?  Cheers, Christian | ||
| Zaf Moderator Username: Zaf Post Number: 3943 Registered: 05-2003 Rating: N/A |
They should be in the book. Look at the shape of the balance wheel bridge. Then count the # of screws on the balance itself. It looks like one of the earlier movements. | ||
| Herrk Junior Member Username: Herrk Post Number: 19 Registered: 03-2007 Rating: N/A |
Well Zaf, I did what you recommended (most of it preliminary to my first post of course), but without the final insight: 1) The shape of the balance bridge makes the movement a L-series one. 2) The shape of the escape-wheel/second-wheel bridge makes the movement a L-series one. 3) The number of screws on the balance is 18 (2-3-4 on each side of the center-spoke of the balance). Though this could be indifferent, the print on page 339 of Manfred Fritz‘ Living Legend book (depicting Cal. 424 and part #721 of the movement) makes me assume that the movement is a L-series one. 4) The serial number of the movement is 121XXX. According to the timetable on page 196 of your book, this makes a production during 1939/1940 likely. The timetable of movements at the end of The Grande Maison book shows that Cal. 11LVC (435), 11LSC (437) and 11L (424) were produced from 1939 and Cal. 11LO (438) from 1940. Thus I may conclude that the movement actually is a L-series one. As Cal. 11LSC was a center second movement this reduces the choice to 11LVC, 11L and 11LO. I have seen pictures and drawings of Cal. 11L, but not the other two. I would generally rule out Cal. 11L as the movement in my Ref. 382 has that distinctive kind of screwed down chaton for the crown wheel, where the winding stem enters. Also the hold of the balance spring end looks different than that on Cal. 11L. So it is down to two, but which one is it? Christian | ||
| Zaf Moderator Username: Zaf Post Number: 3961 Registered: 05-2003 Rating: N/A |
My guess is 11LO. As you've found out, these can be a challenge to identify. |