Benrus Type 1 - Sterile US Military

"Sterile" Issue

Manufactured by the Benrus Watch Co, Type I watches were issued to CIA, Navy Seals and other Special Forces units during the Vietnam war and through the late 70s. The "sterile" issue differs from the more common Types I and II watches by the fact that it has no military issue engravings on the case back. Other than the serial number, no other markings can be seen on the watch. It is thought by many that the "sterile" watches were issued to covert operators. This lack of identification on the watch would maintain a level of deniability in the event the soldier was captured during a covert operation.

Another less exotic (but probably more believable) theory regarding these "sterile" watches is they were unmarked prototypes issued for testing prior to regular production.

See Benrus Type 2 for more information. Benrus Type II

Benrus Type I "Sterile" US Issue

Features

• Case Diameter: 43 mm
• Case Height: 16 mm
• Case length: 47.5 mm
• Lug Width: 19.5 mm
• Movement: Benrus signed GS1D2,
• 17 jewel, hacking automatic. This is a
• ETA 2620 movement modified (by * Benrus) to meet government * specifications. 21,600 bph,
• 42 hr. power reserve.
• Case material: Stainless steel, anti-magnetic to 125 gauss
• Crown: screw down
• Bezel: Bi-directional, no index
• Water resistance: 1,200 feet
• Vintage: Early '70s

Links

• Benrus Type II
• Benrus Military Models
• Marathon Navigator
• US Armed Forces Issued Watches
• Military Diving Watches

Credit - http://scubawatch.org/type1.html