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Pattern, Year & Manufacturer's Marks
1913 - 1922
1922
late-1920's
Unknown - 1953
Pattern Mark
1913 - late-1920's
late-1920's - 1953
Maker's Mark
Year
Month & Year
1922 - 1953
Examiner's Marks
1913
1913 - 1921
Examiner's & Proof Marks
1921 - late-1920's
Unknown - 1942
1942 - 1945
Lithgow
Orange
Mark Showing Convex Side For Bending
1913 - 1953
Examiner's Mark
1913 - mid-1920's
mid-1920's
mid-1920's - 1942
Stamped on bayonets made in the USA on Pratt & Whitney machinery being made for the Lithgow Small Arms Factory. Mark of William Clarkson.