A nostalgic manual-winder that puts the feel of a pocket-watch right on your wrist. Inspired by the pioneers of modern-day railroad transportation that once walked our region’s grounds. The Potomac’s exhibition case-back presents a uniquely remade Unitas movement. A simple but effective caliber originally made for American pocket-watches prior to their conversion into wristwatches for railroad workers a century ago. Fast forward to the new millenium, and our watchmakers have repurposed it once again, but this time in effort to recapture the lost tradition of American watchmaking and horological design. The dial extends this patriotic theme with its railroad-era aesthetic, bringing fresh light to a period of time that glorified American industry and change. Functions include: minute, hour, and a seconds sub-dial at the 6 o’clock position.


Base : Swiss Unitas Cal. 6498 , 17j manual-wound

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

Functions : minute, hour, second sub-dial at 6 o’clock

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



Material : stainless steel handcrafted by Ickler in Germany 

Finish : polished midsection, polished bezel + lugs , satin case-back

Dimensions : 42mm diameter , 13mm width , 22mm lug width

Crystal : domed sapphire crystal with anti-reflex+ scratch resistant coating

Crown : push/pull , enlarged crown with coined grip

Depth Rating : 50 meters

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



Color : glossy white or black

Detailing : gold-plated embossed Arabic numerals , gold-plated minute-markers

Hands : gold-plated embossed cathedral-style hands

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

Series : PO250 (Series One - Potomac)

Reference(s) :  PO250-S2 , PO250-B2

Availability : Retired once the ‘No.100’ unit is completed for each reference

The TWC Headquarters in Baltimore, MD overlooks the iconic B&O Warehouse, home of the original backbone for modern-day railroads. Our watchmakers drew from this timeless landmark to create the PO250, an instrument  that commemorates the Chesapeake’s role in shaping American industry forever. The proprietary Unitas movement found within the 42mm polished steel case pays tribute to early innovations in American watchmaking, as an earlier version of this same movement was a breakthrough work of horological technology in the USA a century ago. The dial extends this patriotic theme with its railroad-era aesthetic. The PO250 paints a horological picture of this story, in which pocket watches evolved into wristwatches due to this railroad boom that all started right in our backyard. Like the B&O warehouse, the Potomac’s large presence serves as a constant reminder of our history and everlasting need for tradition. 

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

$ 2,000.00 USD
$ 2,000.00 USD

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