Certina. A stainless steel automatic calendar bracelet watch
Argonaut 220, Ref:5801 220, Case No.70868254, Circa 1970
27-jewel Cal.25-651 automatic movement, black face with blue outer ring and white baton hour markers, white outer minute divisions with luminous dots at five minute increments, white pointed baton hands with luminous inserts and red centre seconds, date aperture at 6, brushed and polished rectangular case with screw down back, signed crown, fitted bracelet with signed folding clasp, dial and movement signed
33mm x 40mm.