Does look something like an early small Omega movement. 0 size, 13 ligne, I have in Gruen case. Could it be from Aegler who made w.w. movements for Rolex in Gruen shared building? Aegler 13L shown in Gruen Opera watch case. They made a variety for Gruen w.w. and neck hangers.
I must admit I have little experience with Aegler movements - although the second example can't really hide its parentage! The first, however, might be from one of several makers, and I have never seen an Aegler movement like it.....
I believe Aegler made the first 2 Verithin 17l size p.w. movements for Gruen. These were unsuccessful and now scarce. Notice how plate designs are similar to preceding. Some Aegler Wilsdorf/Rolex movements were decorated like the Gruen 13L above.
Addition: although Aegler made pendant and w.w.movements for Gruen it has been suggested never made p.w. sizes. Gruen based in the Aegler building at the time earliest Verithins made probably produced these of possibly Aegler design.
A forum community dedicated to watch owners and enthusiasts. Come join the discussion about watch collections, displays, watch winders, accessories, classifieds, and more! We welcome all manufacturers including Casio G-Shock, OMEGA, Rolex, Breitling, Rolex and Tudor, Seiko, Grand Seiko and others.