Zenith El Primero 20.0143.400

ZENITH El Primero intermediate wheel chronograph reference 20.0143.400, Switzerland according to original papers sold in 1999, self winding, gold plated, on both sides glazed case, snap on case back, white dial, gilded indices and hands, date at 4, rhodium plated movement calibre 400, 31 jewels, precision adjustment, original box and papers enclosed, diameter approx. 38 mm, overhaul recommended at buyer's expense, condition 2, property of a collector