It's amazing that over 10 years later this still rings true. I have just recently acquired a Seamaster dating at '65 and lord knows how long it's been sitting idle, the condition was near perfect despite the small amount of corrosion spots on the dial. I started wearing it and at first it was off the first day or two by -10 to -15 seconds a day but by the weeks end, a stable -5 seconds a day. Pretty unbelievable if you ask me. I've heard of Chronographs with larger deviations. And as M4tt said.... "Did I mention that it is beautiful?" This is one of my most favorite time pieces ever, besides my Mid 1800 grandfather clock in my dining room.From a personal point of view I prefer the 751 and the 565 for the simple reason that they are almost identical and yet still rationally affordable. So, why would I say that the 564 is the overall best movement Omega have ever made, and how do I defend myself from the assertion that I am simply being nostalgic?
First, it is simply beautiful:
Second, it is easy to regulate. the Swan Neck regulation system is both lovely to look at, devastatingly effective and simple to use.
Third, it is simple to repair; an elegant, no nonsense design which is precisely as complex as it needs to be and no more. The regulator (above) exemplifies this; remove the swan neck and you are left with a simple 'stick' regulation. All the Swan Neck regulator is is a spring (the swan neck) and a screw. The spring pushes the 'stick' firmly against the screw ensuring that any adjustment that is made to the screw is transmitted directly to the stick. Thus a simple watchmaker's screwdriver is all that is needed to make incredibly fine adjustment. Simple, beautiful and very precise.
Did I mention that it is beautiful?