Another mine query. Is this Hertz Horn British? Pre 1920? A friend said it looked Japanese but has no Jap markings, only English.
It is marked: M.D.C a f with a possible 1 on another flat side.
It is 145mm long. 31mm lead diameter. 32mm brass. 35mm lead ring. Thread is 38mm or 1.5" 14 TPI.
It is marked: M.D.C a f with a possible 1 on another flat side.
It is 145mm long. 31mm lead diameter. 32mm brass. 35mm lead ring. Thread is 38mm or 1.5" 14 TPI.