Overall scratches there get a shine on dial-degradation (early stage)
Is the world's first automatic chronograph in 1969, published by Zenith and retail. Double name is very rare. The movement was made in retail, case is made by zenith. Zenith above retail dial. Sign of technological power and power relations? Retail at the time was now and infinitely more of great manufacturers. 30 Minutes seems to be El Primero step sewing is characteristic of meter. Is a historical rarity clock tells the history of the two companies.