I was just comparing two of my vintage watches: Rolex 6564 & Gruen 23 precision powerdate.
What they have in common:
-To the untrained eye, these two watches have lots in common, similar dial colors, hands, etc.
-The case size and metal also appear to be very close.
What is different:
-The Rolex movement has a superior feel to the winding mechanism
-The larger Rolex crown makes it much easier to wind.
-The Rolex caseback is boring, the Gruen caseback is just more unique.
-The cost***, The rolex is priced 10x times of the Gruen.
It's hard to stomach that the Rolex is worth ten times the Gruen, as the Gruen has
a lot to offer with the date complication and basic overall feel as this Rolex model.
I recognize the value of Rolex brand, and I drawn to any vintage brand, such as this Gruen when I see one in person...,
I guess this means I am hooked on Vintage Watches... !