This brand according to Kochmann belongs to Sylvan Kocher & Co, Eska Mfg. Co, Grenchen, Selzach , Switzerland. And they had a branch offiice in the Maryland , USA. But as Mr.Richter states it is a must to see the movement.
Not at all. I failed to find which calibre your movement is. But sure there are some members here with catalogs can give you a precise calibre numbers. However it seems to me one of these AS' or ETA's calibres.
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