I've been offered a Seamaster with a cal.503movement. The dial has the "Meister" label above the Seamaster. I assume this means it was sold in Zurich by Meister and the serial # is in the 18 million range so I guess it was originally purchased in the early '60s. Does a label like this enhance or detract from a collector's point of view?
The inside of that caseback is different, but ah spos it could be authentic. Most collectors would rather not have a dual branded (i.e.: the store and the manufacturer) dial, but in some instances they might not mind (Birks Eterna chronometers) and they might even be desired (Rolex Tiffany).