Approx Age of Bear Grizzly

[Buffler Razz]

I picked this up for my son after he expressed an interest in putting away his training wheels and getting into traditional archery. I'm curious as to how old it may be.
Ser# is KR9224, AMO 58", 45#. It has a silver medallion and the Bear logo states Grayling Michigan.Brown glass limbs. riser is light brown and somewhat greenish/brown.
     
Thanks-Razz

[Dan Worden]

It's hard to pin 1970's era Bears,but here are what the clues I see say. I'm no expert either, just studied them somewhat.

The KR indicates 1971-77

The button instead of coin, 72 or later.

Two tone 72-74.

[Buffler Razz]

Thanks Dan, my son will find it interesting.