This Certina from 1951 is why we love patina! The dial two toned has aged beautifully and without damage.
Case ref: 8721.1 is in used condition with the battle scars to prove it, case back has no major damage with serial number still clearly visible. Case size 33mm w/o crown. Kurth Feres (Certina) calibre 320 is in very good condition and has had a fill service ink barrel arbour bush repair.