LONGINES Serge Manzon rare ladies wristwatch in silver reference 5003 410, Switzerland around 1970, manual winding, two-piece construction sterling silver case, snap on case back, unusual case-form, neutral leather strap with original Longines-deployant clasp, white dial with Roman-numerals, black hands, rhodium plated movement calibre 5601, 17 jewels, 29 x 26 mm, overhaul recommended at buyer's expense, condition 2