That is a very odd one.
I don't think it's English, but it also doesn't look very French to my eye. Maybe Belgian?
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it was found in French Catalonia. Can also be Spanish; hard to say without documentation to compare
Moreover I found a similarity with another razor from the collection of a member of SRP (robertoreigosmendez) who lives in the province of Gallicia in Spain. It may be a track
Attachment 291089
Attachment 291090
this square punch is of the same kind
Attachment 291093
An interesting punch: it is usually believed that the "GR crown" punch was used for King George IV (1820-30) and then in the XX ° for King George V.
However, these razors are typically dated between 1760 and 1780 for the shape of the blades (dip-at-toe) and characteristics of the handles (turtle and typical silver tips) in the range of luxury products. So, GR is also for George III.
The "LONDON" punch is used by Samuel Linley (son of William Linley cutler. Freedom granted in 1772) and by John Linley (son of William Linley cutler. Freedom granted in 1770) (Gales & Martin 1787 directory)
Attachment 291191
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Probably not 1700's, but looks pretty old. Maybe one of you guys has seen one of these before. I'm hoping to come across an old stubtail for a project. Even if it needed new scales. This one is just too pitted. I sanded some of the pitting out of the toe, but I'm not sure if it would even hone well since the pitting is so deep into the blade.
G (crown) R
NEAT
CAST STEEL
Attachment 291220
Of course. Meant to do that yesterday.
Attachment 291281
Attachment 291282
Seen better days.