What Makes a Curvex Watch a Curvex?
SO often Gruen watches that are not Curvexes are claimed to be Curvexes. This happens on eBay on a daily basis. The shape of the watch is not what defines a Curvex model. Don't be fooled by dishonest sellers that are making false claims. The test for determining if a watch is a Curves, or not a Curvex is quite simple. In order for a watch to be Curvex, it must contain one of the Curvex caliber movements. There are only four men's caliber movements and three women's caliber movements that are Curvexes. If the watch does not contain one of these 7 movements, then it is simply not a Curvex.
The same kind of rules apply to Quadron models. If a watch does not contain one of the movements that are defined as a Quadron movement, then the watch is not a Quadron. There are seven Gruen movements that are Quadron movements.