How times have changed. Check out this early 70's advert from Omega
The most expensive watch is the 18k gold one which you'd expect, but that's down to the gold case. The f300 is the next most expensive. It's more expensive than the Omega proplof and a not far off a third more expensive than a Speedmaster. The Speedy is only a couple of quid dearer than a 9k dress watch. The "electronic watch" was the future, the Speedy was the past. Today, how much would you pay for the vintage 72 Speedy, or the Proplof and how much would you pay for the f300?