Original Laco Durowe D5 Pocket Watch Case 55mm FL23883 Beobachtungsuhr WWII

Original Laco / Lacher & Co. Pforzheim watch case.

The interior caseback retains its original wartime markings:

• Beobachtungsuhr
• Bauart: Durowe
• Gerät-Nr. 127-560B
• Werk-Nr. H2149
• Anforderz. FL23883
• Hersteller: Lacher & Co. Pforzheim

Specifications:

• Diameter: approximately 55 mm
• Original Laco case components
• Snap-on caseback
• Crystal NOT included
• Movement NOT included
• Small dent present on the caseback
• Sold exactly as pictured

The original Durowe D5 movement fits this case correctly (shown in the photographs for reference only and NOT included in the sale).

Historical Notes:

The markings correspond to those found on original Laco Beobachtungsuhr (B-Uhr) production from the Second World War. The designation FL23883 refers to the official Luftwaffe specification for observation watches, while Gerät-Nr. 127-560B is the military equipment reference used on Laco navigation watches. Original Laco B-Uhr watches were fitted with the Durowe D5 movement, a large pocket-watch-based calibre developed for precision navigation. These historical details are well documented in surviving examples and period references.

This particular case differs from the commonly encountered wristwatch B-Uhr cases by lacking fixed strap lugs. Its exact original application cannot be confirmed. It may represent a special-purpose case, a workshop or service case, or another period configuration. As no period documentation confirming this specific case style has been identified, it is offered as an original Laco / Durowe case with authentic wartime markings, allowing collectors and researchers to draw their own conclusions.

Please study all photographs carefully as they form an important part of the description.