MM250 - SB2

A triple-calendar chronograph for collectors seeking maximum utility and elegance out of a mechanical tool watch. This second series of the Mission Moon continues to respect the design and structural principles of the iconic Mission M250, but boasts an even more impressive array of full-calendar complications with its restructured 7751. The handmade guilloche dial vests a moonphase window, date-calendar, hour/minute counters, and day/ month windows. This latest run of the Mission Moon is limited to 100 individually-numbered MM250-2 timepieces


Base : Valjoux cal. 7751 , 25 jewel , triple-calendar chronograph 

Modifications : adjusted to 5 positions, Glucydure Balance, Nivarox Hairspring, Incabloc Shock Absorption , power reserve of 46 hours 

Functions : Hours, minutes, small seconds, central chronograph seconds, central date hand, day of the week at 12:00 (left side), month at 12:00 (right side), 30 minutes chronograph counter at 12:00, 12 hours chronograph counter at 6:00, moonphase indicator at 6:00, 24 hour time at 9:00 , start/stop at 2:00 , reset at 4:00

*Decorated, modified and adjusted in Baltimore, MD. USA



Material : stainless steel handcrafted in Germany

Finish : satin midsection + lugs , satin bezel

Features : polished crown guards, exhibition back, quickset for date, month & moonphase , exterior weekday push button, date-reset pusher , free-standing chronograph push buttons

Dimensions : 42mm, 13.5mm width , 20mm lug width , 93 grams

Crystal : Scratch Resistant anti-reflex Sapphire crystal on front and back

Crown : push/pull , quickset function 

Depth Rating : 50 meters

*Designed, prototyped, finished and finished in Baltimore, MD. USA



Color : black , silver or black tachymeter 

Detailing :  handmade engine-guilloche , rhodium-plated hour indices , blue-painted minute indicators 

Features : date-calendar on outer-ring with crescent moon red-tipped pointer hand, three sub-dials , moonphase window , day/month windows 

Hands : gold cathedral (G) or white-painted (WP) can be made-to-order

*Designed, prototyped, and finished in Baltimore, MD. USA

Series : MM250-2 (Mission Moon | Series Two )

Reference(s) :  MM250-SB2 (- WP, - G)

Availability : Retired once the ‘No.100’ unit is completed for the entire MM250-2 series


The Mission Moon was evolved from our original Mission M250 chronograph, an instrument made for NASA astronauts at the start of the new millenium. It was Towson Watch Company’s first commercial series. Prior to launching the first collection of 25 timepieces, several served as a faithful companion to astronauts aboard the Endeavor aircraft on a NASA STS-99 mission, which mapped the earth’s surface from the south of Greenland to the northern edge of the Antarctic in 2000. The latest adoptions to this limited Mission Moon Collection of 100 timepieces retain the elegant, confident, and explorative traits characteristic of our "Mission Collection" while bolstering the practicality for whom this timepiece was intended to be of service to, space travelers.

Availability : One sub-series (SB) within the MM250-2 Collection - including two references

Distribution : exclusively available for purchase here
Shipping : Fedex Priority 

Cost : free + zero liability to you

Returns : no returns

Warranty : lifetime (must be located in the official TWC customer registrar) 

Customization : strap

$ 3,500.00 USD
$ 3,500.00 USD
MM250 - SB2

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