What year is this Laco Sport

For what it's worth, the Laco 526 (a.k.a. Durowe 410) was introduced during the mid-30s, and replaced - I think - around 1950 by the Durowe 420. A photo of the movement might help since the Laco engraving on the movement changed over the years from a cursive typeface to block lettering. Laco produced an unbelievable number of variations of the Sport model over the years, but given the shape of the case and its case back my guess would be that it was from the '40s and not the '50s or '60s.

stuffler said:

1945 or even a bit later.

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I'm not sure about Laco production history during the late '40s, but the factory was leveled to the ground on February 23, 1945 as part of RAF bombing that killed 31% of Pforzheim's population and destroyed 83% of its buildings. Since the Laco-Durowe head office wasn't rebuilt until 1949, it would be interesting to know if Laco continued to produce watches at a temporary facility during those four years, and if they did, what the production numbers were. It certainly would have been difficult for the company to have come close to its production output of the early '40s.

I didn't know, so thanks for that.