Tail light for Honda CB e CL from the '70s. 1970 Honda CB350 Tail Light Stanley HM11RC CB 350450 750 Stanley HM-11-RC 

There is a hole in the bottom part, easily repairable and not very much visible, being on the lower side.

Should be compatible with CB CL 350 450 750 CB750 K0, CB750, CB750K0, CB 750 K0, CB 750, CB 750K0 

Please check the pictures and do your research to verify compatibility.