Very rare 1970s Zenith El Primero Ref. G384, 18kt solid yellow gold in overall mint condition. This configuration in 18kt gold is very uncommon. In my knowledge, only two pieces have been seen in the market. Original awesome white dial with black subdials and tachymeter scale, gold hands and applied gold markers. The sharp case, measures 37mm without crown, thickness 13mm. Overall in mint condition and recently serviced.