Help identifying these forged 3x7 cranks from 1990s

[Brycer1968]

Hi there. Long time lurker and first time poster. I'm trying to identify the manufacturer/model for this crank set. It came on a early 1990's 7 speed Boulder Bicycles CRMO framed Full suspension mountain bike - with the funky shock inside the end of the top tube.

The bike had a few titanium and XTR parts on it, but I'm stumped by the cranks, which have no markings on them. It came with triple rings. The milled inset rectangle on the crank face may have had a Mfg tag or something at one time??-but now its just a neatly milled out rectangle. Arms and spider are both alloy. Has milled windows/openings in the cranks and also has what appears to be a factory milled out section on the back side of the drive side arm to clear the chain, which rides very close to the arm with this design

My sense is that this is gonna be a remedial level trivia question for many of you on here. Any help is much appreciated.

Cheers,
Bryce

 

[pete_mcc]

Re:

Very rare, Cooks Quality Product cranks (not Cook Brothers, but related). Most of their cranks were dogbone style ones but they made these for a very short period.

 

[Brycer1968]

Re:

Thanks. I knew that someone here would know.
I'ts likely that I'll be selling these on Ebay shortly, if anyone is interested in the set
Cheers,
Bryce