Thank you Researcher for that catalog page. Note the Grade 1 was listed with "Crescent Steel" barrels. I have not previously seen that name. Was it listed in the Hollenbeck Gun Co. or 1905-1908 Three-Barrel Gun Co. catalogs?

Crescent advertised "Decarbonized Armory Steel" barrels from introduction of the Model 0 in 1897 until the mid-1920s.

Composition analysis by Optical Emission Spectroscopy (OES) showed c. 1900 Crescent “Wilson’s Welded Steel” to be Bessemer Rephosphorized Carbon Steel (similar to AISI 1017) with a Tensile Strength of 66,000 psi.

c. 1925 Crescent Fire Arms “Genuine Armory Steel” barrel with the ‘LLH’ mark of Laurent Lochet-Habran was Rephosphorized AISI 1040 Carbon Steel with a measured Tensile Strength of 104,000 psi.

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