Zenith El Primero Chronomaster for $4,726 for sale from a Private Seller on Chrono24
Sold Price: Zenith El Primero Stratos Flyback, limited edition no. 417/500, dedicated to Col. John Nicholas Blashford-Snell, men's wristwatch, guarantee card, instruction manual and original box - May 2, 0120 7:30 PM EEST
Zenith El Primero 21 Booklet Manual | eBay
Instruction manual ZENITH El Primero
Zenith 03.20411.4061/07.C776 El Primero Chronomaster 1969 - SVRA Chronograph Automatic Watch - Luxury Watches USA