Speedmasters With Display Back Already back in 1980, Omega introduced the first Speedmaster Professional with a display back. Quite uncommon in general at that time. However, it was only available for the 18 carat gold Speedmaster Professional Apollo XI numbered edition. This was reference 345.0802. That watch is powered by caliber 861L movement, similar to what […] The post Speedy Tuesday – Omega Speedmaster Professional Caliber 863 Reference 3592.50 appeared first on Fratello Watches.