Mark Ruhe is a bamboo rod builder from Spokane, Washington. His business was called "Bitterroot Rods," and he built rods primarily in the 1990's on a full time basis. He is featured in one of the first issues of the now defunct "Bamboo Fly Rod" magazine. Mark's rods rarely come up for sale as they are prized by their owners. His work is outstanding. I was lucky enough to have him build a couple of blanks for me in the late 1990's. I don't believe Mark builds rods anymore (at least on a full-time basis).
This is a great rod and I'm sure the new owner will thoroughly enjoy it!
I'll send a PM with the name on the rod>