by mbell » 1 Sep 2004 16:16
As I see it, If a door is fitted with a a square escutcheon, that wont necessarily indicate that is a 3G110 though, and visca versa.
For example, the lock may have been changed and the escutcheon kept the same. Someone may have had a spare escutcheon from a Chubb, and fitted it with another lock etc.