based on you being in Colorado, maybe it's an Ernie Martinez made cue. I know he used that brown phenolic.
I sent pics to Andy Gilbert. It is a Gilbert cue
Some of you guys impress me with your ability to figure out who built these cues. What was it about this cue which made you know it was a Gilbert?
The pin, ringwork, and it looked like a Gilbert, plus I saw another "unknown" cue that I suspected was a Gilbert.