IWC B-Uhr (Beobachtungsuhr) WW2 Luftwaffe Observers Wristwatch c.1940

IWC B-Uhr (Beobachtungsuhr) WW2 Luftwaffe Observers Wristwatch c.1940


Stock Number: W0354 Category:

Extremely Rare IWC B-Uhr (Beobachtungsuhr) WW2 Luftwaffe Observers Watch c.1940

In 1935, with the storm clouds of war gathering over Europe, Adolf Hitler announced his plans to reconstitute Germany’s Air Force and officially created the Luftwaffe.

The German Air Ministry (Reichs-Luftfahrtministerium), which was responsible for aircraft production, began to design a suitable timepiece for its bomber navigators. Pilots required extremely accurate watches for navigational purposes. The watches needed to be precise, robust and easily read. This led to the iconic B-Uhr design being conceived.

These watches were very large in size (55mm) and were made to a standard specification. The movements were uniformly cased in a grey varnished, brass or steel housing with a snap-on back cover. Their dials were black with large luminous Arabic numerals and minute and second indicators. The hands were coated with radium so the watch would glow in the dark and the movement featured a hacking mechanism to aid precise time setting. The outer casing had FL23883 engraved on the left-hand side. FL designated Flieger, and 23 identified the watch as a navigation watch.

Before delivery, every watch had to undergo stringent testing for accuracy. Each watch was tested in six positions and at three varying temperatures before it could be certified by the German Naval Observatory.

There were five manufacturers who supplied the B-Uhren. The four German makers were A. Lange & Sohne, Wempe, Laco and Stowa The fifth maker was the Swiss International Watch Company (IWC), which supplied watches to both Axis and Allied forces throughout the war.

These watches were not personally issued to aircrew in the usual sense. Instead, one was supplied to the navigator of the bomber crew before every mission or raid. It would then be returned to the stores following their return.

The IWC B-Uhr is considered to be the rarest and most highly prized of all the B-Uhren. IWC only produced 1,000 of these watches, which were shipped to IWC’s Berlin agent, Siegfried Heindorf, in 1940. Due to the heavy losses sustained by the Luftwaffe during the Battle of Britain, it is assumed that very few IWC B-Uhr survived the war.

The watch for sale was examined by IWC at their Museum in Schaffhausen in 2017. They certified the watch as being completely genuine and correct and awarded it with a Certificate of Authenticity, which accompanies the watch.

The IWC B-Uhr for sale is in remarkable overall condition and is one of the very best examples you could ever hope to find.
The dial, hands and crown are all correct to the original specification of the watch.
As expected, there are a number of fairly minor scratches and marks on the outer casing of the watch.
All the correct markings are present on both the outer and inner casing. The watch retains its original cuvette dust cover, which is often lost over the years.
Movement numbers on these watches range from 101 3801  to 101 4800 and the case numbers from 103 3201 to 103 4200. The movement number for the watch for sale is 101 4xxx and its case number is 103 4xxx.
The very fine IWC 52 calibre movement is in excellent condition and is running well and keeping good time.

The watch is fitted to a two-piece leather strap and comes complete with a free six-month warranty.

Diameter: 55mm (exc crown)