Vintage British Made Stainless Steel Bonklip / Ladder Style Watch Bracelet

Patent No. 267943 | Circa 1940s - 1950s

Up for sale is a highly desirable, authentic vintage mid-century stainless steel watch bracelet in the iconic "Bonklip" / "Ladder" style. Proudly stamped on the clasp: **"BRITISH MADE PAT. NO 267943"**.

The patent marking "BRITISH MADE PAT. NO 267943" refers to the specific registration for this adjustable locking mechanism design, often associated with prominent mid-century British makers like B.H. Britton & Sons or Excalibur.

This style of breathable, infinitely adjustable watch band is legendary among collectors. It was notoriously favored by the British Ministry of Defence (MoD) for RAF pilots and military personnel, often paired with legendary tool watches like the IWC Mark XI. Because of its unique design, it can be easily fitted over fixed lug bars or traditional spring bars.

Item Details:

*Style: Bonklip / Bamboo / Open Ladder Link

*Material: Stainless Steel

*Markings: "BRITISH MADE PAT. NO 267943" clearly stamped on the clasp face.

*Lug Width: 16 mm (Straight end-links)

*Strap Width: 12 mm

*Strap Length: 21 mm

*Adjustability:  Fully adjustable. The clasp slips between any of the ladder links, allowing it to perfectly fit almost any wrist size.

Condition:

Excellent vintage condition with a beautiful natural patina. The stainless steel shows minor, superficial surface scuffs/character marks consistent with an authentic mid-century piece, but has no deep gouges, kinks, or damaged links. The sliding mechanism and fold-over clasp function perfectly and lock securely.

*Please review the high-resolution photos for a closer look at the condition and markings. The watch band pictured is the exact item you will receive.*

Shipping & Handling:

* Securely packed and shipped with tracking.

* International shipping available via eBay International Shipping Program.