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Certified Pre-Owned Watch Program

Serviced Vintage BAUME & MERCIER LEMANIA 1873 Chronograph 18K Gold Steel Watch

Regular price $0.00 Sale price $1,799.99
On Sale

Out of stock

Lemania / Omega Caliber 861

If we are talking about icons, first we will talk about Caliber 321, and then what followed which is iconic caliber 861 which is still being made for Omega in different models. The 861 was very similar to the 321, but replaced its column wheel switching mechanism with a cam and increased the beat rate from 18,000 to 21,600 vibrations per hour. Most Speedmaster Professional watches from 1968 to the present have used variants of this movement, including the modern rhodium-plated caliber 1861 and decorated exhibition calibers 863 and 1863. A standard Speedmaster Professional model with Plexiglas crystal, solid caseback with anti-vibration and anti-magnetic dust cover, tachymeter scale, without date or day complications, and powered by a caliber 861-based movement has been continuously produced since. The tritium-powered phosphorescent lume on the hands and index markers of the original watches were replaced at the end of the 1990s with non-radioactive pigments, but the fundamental design, dimensions, and mechanism of these watches have remained unchanged. In this form, the basic Speedmaster line has remained flight-qualified for NASA space missions and EVAs, after re-evaluation by NASA in 1972 and for use in the Space Shuttle program in 1978. The current such model is reference 311. (since 2014).

This is a beauty. It is very rare to find a Lemania movement like this the company that made all the Omega speedmaster & SeaMaster Movement. All the legendary movements.  It is very rare to find a watch this old with Baume & Mercier box. Defiantly a collector watch. Please look at all the pictures, as they are part of the description. The watch is working and Serviced. Contact me if you have any questions first.




Stainless Steel Case and Case Back with 18k Gold bezel.

Case Size

32,00 mm without the crown (on smaller side) 35.9mm wide including the crown and 38.8mm in length


Stainless steel cover signed. Baume & Mercier Geneve 1830  6101.099  1450278. Snap on. 

Please note case back in most cases is not fully tighten.


Gold and Silver UnSigned


Acrylic in good shape.


18k Gold Bezel (there is no marking on the watch, going based on what was provided to us)


White with Roman Numeral Swiss made Mark, with the seconds Hand and chronograph. Please see picture for more detail.


Seconds,  Chronograph, Tachmeter, 




Movement Notes

Just inspected and in great shape. Fully Serviced and Overhauled. Come with a Service Warranty! 

Please see pictures and as some old movements don't have a very clear, Since it seem to have a  Lemania 1873 movement, 

which is the same as Omega 861 / 863 caliber.


New Genuine Leather little different from the picture darker brown,  the one in the picture has split in half, it is cracked, need changing.  Please see picture.


Baume & Mercier Box with wood trim, see picture

Reference Number


Made in


Water Resistance

No, Please pressure test before water use.

Service Level*

Level 1 - 3/29/18 (Please see Tab below for details) Please keep in mind when comparing serviced watches with none serviced watch.  

Price is at least $300-$500 more based on complications. Since old watch are like old cars you never know what you gone get.

In-House Time Test Results**

21 s/day 

This is great time keeping for a watch in this age!


3-Month Service Warranty





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