Odd-looking high grade movement identification

[Thor Bill]

Have seen this thing many times which are ubiquitously signed by high-end American jewelrers. The maker ? Thanks in advance for assistance to be rendered.

 

[Benjamin E.]

I think they were made by Henri Beguelin (sp?), though I don't know if he was a watchmaker or a retailer.

 

[Thor Bill]

Ben, thanks your input, but it doesn't seem that H Beguelin had made movements of this level

 

[Dr. Jon]

Beguelin was an importer and retailer. The firm did not make watches. The watches they imported were typically very fine.