Fortis automatic 21 jewels incabloc original

Brand : Fortis nick name : Fortis Incabloc 21jewels serial. : 3091044 circa.1975 movement : automatic eta 2789-1 dial type : analog case : steinless steel, 35 mm ( 38 with crown) bracelet : steinless steel original , lug size 18 mm condition: used preloved, Full Original, minimal patina dial, and good casing as picture, accuracy and PR. very good rare amp;collectible watch