Door plate with knocker

Door plate with knocker
Title
Door plate with knocker
Medium 
Brass
Dimensions 
with bolt: 2 3/4 in. ( 7 cm ) Overall: 4 x 5 in. ( 10.2 x 12.7 cm )
Description 
Rectangular with hinged frame and tab that functions as a door knocker.
Object Number 
INV.806
Marks 
engraved: on front- 1 5/8 height: "31" written: in pencil on reverse: "31 BARROW/ST./190(3)"
Due to ongoing research, information about this object is subject to change.
Creative: Tronvig Group