A few hammers

[Robson Valley]

Thanks for the pictures of the textured surface.
Many of the massive wood carvings here in the Pacific Northwest
are decorated/finished in the same way.

"Raven and the First Men" (Bill Reid) is textured but so shallow that
it's visible only in really bad light.

Welcome to MOA! A place of world arts + cultures | UBC Museum of Anthropology

Kestrel makes a finishing adze for the purpose

Kestrel Tool

I've tried to do it. Clearly, there is great skill involved.

[NeilS]

I sent a photo of the stamp on one of the chisels to a Japanese carpenter I met on my trip. He said they are Fuji Hiro chisels and the type of chisel is Sumi Nagashi.

I expect that your Fujihiro are made by either the very experienced blade smith Chutaro Imai in Sanjo or Ohkubo Teiichiro in Yoita. Both Niigata blacksmiths.

Either way you won't be disappointed.

Good buy!

Neil

PS - the blade smiths call that finish Mokume