it is a windsor artiste no 3,it has had a truss rod ,put in by somebody,but the action is still high,I have just put an 11 ml bridge,on instead of a 12.5,but it could probably take a 10 ml bridge.
it has a vellum skin ,and a mellow sound .
I cant find a serial no ,I am guessing that it was tuned gcgbd,and that the player wanted a blue third on his/her c chord,and had it specially made .