British manufacture. . There is a US variation of this lock that we have not found as yet

“G. G. P. PAT. 24”. 2 3/4″ high x 2 3/4″ wide. Steel body. Brass face plate. Brass shackle. “G. G. P.” represents “G. G. Potter”.Patent #16511. There is a US variation of this lock that we have not found as yet US Patent #1401030.