Although it may be wrong, the Third Edition Blue Book of Modern Black Powder Values 2003, says:
CHEROKEE- .32, .36, or .45 cal. perc., 24 in. octagon barrel, double set triggers, color case hardened hammer and lock, brass trim, American walnut. Disc. 1994.
HAWKEN- .50 or .54 cal. perc, or flintlock, 28 in. octagon barrel, color case hardened hammer and lock, double set triggers, 8.5 lbs.
RENEGADE- .50, .54, or .56 (smooth bore) cal, perc, or flintlock, 26 in. octagon barrel, color case hardened hammer and lock, double set triggers, 8 lbs. Disc,
SENECA- .36 or .45 cal, perc., 27 in. octagon barrel, color case hardened hammer and lock, double set triggers, American walnut, 6 lbs, Disc. 1987.
Based on this, the barrel length might be the best indicator of what model your gun is.