If the limbs are solid fiberglass (no wood core), it may be a Bear '76er. I believe the Minuteman used the same or a similar riser, but the Minuteman's limbs had wood cores with fiberglass on back and belly.
I've got a '76er-- it's a 58" bow that draws 40#@28". Has a green riser and brown fiberglass limbs. It actually shoots pretty nice-- would make a great bowfishing rig.