Omega Speedmaster 345.0809

Omega Speedmaster Professional, Chronograph Wristwatch, stainless steel, hand-wound, black dial, with 4 sub-dials for date, moon phase, 30 minute, 12 hour counter, small second, caliber 866, ref. no. ST 3450809, movement no. 44123011 17 jewels, diameter approx. 42 mm, around 1985, tachymeter, 114.1 g, concealed original folding clasp with owner's monogram (AM) Ruf 4,500