JACOB (Georg Jacob) Watchmakers' Lathes Catalogue 15363 GERMAN TEXT. JACOB (Georg Jacob) Watchmakers' Lathes Catalogue Circa 1960s showing the Geneve-type models Nos. 15363, 15919, 16944 and their many variants and accessories. 8 pages. GERMAN TEXT. Manufacturers: Georg Jacob Jacob Models: Geneva 15363 15919 16944 Contents: Catalog