After more than five decades concealed in the Ollech & Wajs archives, an almost forgotten watch, originally produced for U.S. Army infantrymen at the height of the Cold War, is reactivated.

The OW MK-102 is based on the 1969 K-101, a custom watch created for troops of the U.S. Army’s 2nd Infantry Division, known as the “Indianhead” Division, who safeguarded the Korean Demilitarized Zone from 1965 onward. Their mission: to defend the peninsula against incursions from the North. The MK-102 bears the same vintage Indian Head insignia as the original, a symbol of strength, courage, and tenacity, instilling a warrior spirit in those who served in this strategically critical theatre.

The first 56 watches will have numbered crowns, thereafter the crowns will be marked with the OW’s famous propeller monogram.

– Swiss made
– Bespoke Soprod P024 Automatic
– 300 m / 30ATM
– Diameter (excluding crown) 39.5 mm
– Numbered Edition (56)
– Three-year warranty

The M-Series Heritage Collection is a commemorative reimagining of custom field and pilot watches made by Ollech & Wajs for various branches of the U.S. Military in the late 1960s and early 70s. They were purchased by serving personnel deployed across Southeast Asia, as well as by returning veterans who valued OW watches for their reliability, robustness, and extreme water resistance. Surviving examples are extremely scarce and highly sought after by collectors of vintage OWZ.

The re-issued watches preserve both the spirit and legacy of OW’s deep military heritage. While each model is allegiant to the original, it has been thoughtfully re-engineered to meet contemporary OW standards for precision, durability, and design.

Case
39.5 mm × 12.5 mm; 48 mm lug to lug, brushed 316L stainless steel, screwed bottom, screwed crown, rotating steel bezel; made in the Swiss Jura

Bezel
60-minute Tactical bidirectional friction bezel / PVD coated

Glass
Sapphire with anti-reflective treatment

Dial
Hands and indexes in Super-LumiNova^®

Water resistance
300 m/ 30ATM

Movement
Automatic, bespoke Soprod P024; date-only calendar, with semi-instantaneous changes and quick adjustment using the crown; stop seconds; 4Hz 28,800 vibrations per hour; 25 jewels; 38-hour power reserve; lncabloc. Bespoke OW Zurich 1956 rotor, OW-engraved platine, custom screws, assembled for OW and adjusted in three positions

Black RAF strap
20 mm military-grade grey nylon; finished in Switzerland; with a brushed stainless steel thorn buckle, signed ‘OWZ 1956’

Origin
Handmade in the Swiss Jura