Roger Dubuis. A large limited edition 18 carat pink gold and diamond automatic wristwatch, bulletin D'Observatoire Ref No 01/28, Movement No 1244, Circa 1998 25-jewel Cal.57, nickel automatic lever movement, stamped with Geneva seal, pierced rotor with RD monogram, gilded dial, Arabic and Roman numerals, inner track for 24 hours indication, oversized 18k pink gold rectangular case, diamond-set bezel, sapphire crystal display back secured by eight screws, case, dial and movement signed, with a fitted black leather strap and an 18 carat pink gold Roger Dubuis diamond-set buckle, dimensions 34 x 46.5 mm