just responded to the Skeleton Clock post below, but reposting here since that post is about to roll to next page.........
From 1951, 100% original, an extremely rare iteration due to the combination of it being rhodium plated and the regulator knob facing towards the FRONT of the clock. I think JLC only did a small run of these front facing regulator knobs, so when you cross that with the uncommon rhodium plated, and further cross that with the Atmos II movement, and look at the all-original excellent condition, well I have NEVER seen this exact JLC Atmos permutation, and I've watched more than 5000 Atmos e-B*y auctions. If you look closely at the second picture, you can pick up part the adjustor knob. The closest I've seen is a permutation where the 3 and 9 were "horizontal", not "vertical".
It was fully serviced in the last two years, and keeps very accurate time.

This message has been edited by MTF on 2008-07-18 13:20:39
the Atmos 80th anniversary year......
Regards,
MTF
... My circa 1970 Atmos runs at right about that 30-60 sec. per month standard. I've had to adjust it once since changing over to daylight savings time in March. The key is using the internal level to get the clock perfectly level.
Please excuse the fingerprints in the photo.
I've seen yours and it is a most unusual example. Have you sent photos to JLC? They may have more information on it. I've wondered whether it was a prototype which was never mass produced.
Enjoy,
gatorcpa



apart from british summer time- gmt i dont think i've ever needed to adjust it. it does sit perfectly level, but on a mantlepiece above a woodburner and it doesnt even run fast or slow during the winter when the woodburner is used more often. its very hard to check timing as it has no second hand.
as i said in the skeleton clock thread i think its probably the best mantle clock ever made and i havent encountered any of the problems others have mentioned, it just carries on regardless of the world around it, whereas my Gustav Becker torsion clock will gain or lose at the drop of a hat.
here it is in situ with our lalique dragon on top.

not the best of pics, but the uploader is playing up pn me.
Graham


... JLC thorugh their web site:
http://www.jaegerlecoultre.com
Choose "Contact" at the bottom of the page, then choose item 3. "Historical Collection" from the menu.
Be sure to provide the pictures from this post. I'm sure JLC will respond with information regarding your particular piece. I don't think they will provide general information about production or value.
Hope this helps,
gatorcpa
Thanks guys for posting your pictures of your wonderful clocks. The atmos is brilliant and another reason why my Love for JLC is long and lasting.
best regards
COD