A 381 as you notice…
but in German silver with 42 jewels and the regulator barrel at a different place….
Photoshop lie or reality…
What's interesting, however, is that it has enabled us to discover that the regulator barrel is not in the same place as in the various models of QL Duometers that have existed... (sometimes on the left, sometimes on the right) A curious observation with an explanation... or approximate assembly?