Bulova Mono-pusher 'Telemetre' chronograph with a Landeron 11 movement in a tonneau nickel chromed case. It appears to be in totally original condition, near NOS I would say with the exception of some light wear on the case. The movement has been serviced by the previous owner and runs well. The 15 jewel movement is marked with a '58' below the balance wheel.
In reply to This video on chronographs… by 1955mercury
What would lead you to believe that this is fake?
In reply to What would lead you to… by thewristelier
I don't know if it's a fake or not. I'm not that knowledgeable on chronographs. I was just sharing a video of someone who seems to be an expert on them.
Hi everyone and thank you all for your input so far! I noticed that one of the links I shared about the movement doesn't seem to work, so here's a link to the image I intended to share (in German) and a translated version (Google translate): https://imgur.com/a/52Aca7s
the spelling of 'TELEMETRE' (Telemeter) suggests French or French Canadian origin.
I took the liberty of reaching out to Dr Ranfft on the movement. The Landeron 11 movements all seem to be round so either this was modified by Bulova or a differently caliber. Once he replies I will let you know.
In reply to I took the liberty of… by JimDon5822
Thank you but I believe Dr. Ranfft sadly passed away back in March of this year. I would love to be wrong, but I recall this news going around the community over the summer.
In the previous imgur link/photo I sent, the movement sheet suggests it's a "Hahn / Landeron 12 3/4", Hahn being Charles Hahn Jr. of Charles Hahn & Cie, or Landeron, later becoming Ebauches SA.
"Landeron's column wheel chronograph movements were famous, and the company supplied these movements to many militaries. Examples include Cal. 11 and 13 and the state-of-the-art Cal. 39. Because they held the Breitling patents, Landeron was the exclusive supplier of column wheel chronograph movements until their expiration in the 1930's."
(https://wiki.grail-watch.com/index.php/Charles_Hahn_%26_Cie#FHF_and_Ebauches_SA)
A sub-link on the Landeron 11:
"The Landeron 11 and similar Landeron 13 was a chronograph movement produced in the 1940's by Landeron.
It is a compact 5-pillar column wheel monopusher chronograph movement measuring 13 ligne. Cal. 13 had a stronger mainspring.
Cal. 13 was also sold by Alpina as their Cal. 651 and Cal. 940."
If produced in the 1940's s suggested, this example could well be the same Landeron 11, or rather a derivative tonneau version of it?
In reply to Thank you but I believe Dr… by thewristelier
That is so tragic. Dr Ranfft was an icon of the industry and his work on movements along with his website was a labor of love. He will surely be missed.
If a telemeter records distance traveled over time and given Bulovas' involvement in auto racing I wouldn't be surprised if this watch were related somehow, I'm thinking Le Mans ....
In reply to If a telemeter records… by FifthAvenueRes…
while I'm here....
I don't think the Watch is 1930's, I have a Chronograph with a similarly hallmarked bridge dated 1959, prior to (1940's) were hallmarked on one of the plates.
all thoughts pure speculation of course.
In terms of identification I suggest "Bulova Chronograph", my only question is year