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Peters is a commercial heat treating service that has a division specifically for blades.
Many top level, professional knife makers use Peters.

Blade Division FAQ - Peters' Heat Treating Peters'...

Honing was done on a coticule with final finish on a dark blue Thuringian.

Thank you for looking.
Pics picked up overhead lighting.
No hamon or dark spots - can kind of tell on second pic.
I hone/restore for a living. This one shaves as well as anything that has crossed...

Wanted a large wedge/near-wedge, but they have gotten too pricey.
So, I joined my local blacksmithing group.

O-1 with heat treating by Peters in Meadville, PA.
Acrylic tortoise shell scales...