Who can tell me how many variations of the Old Model Bearcat there area? I am aware of the 3 digit or less variation, the two years of alphabet variation, the early no logo on the grip variation, the steel ejector rod variation, the 90 prefix and the 91 prefix, two trigger different guard super bearcat variations. I know there are such things as duplicates, engraved etc., but I don't consider those real variations. If a person had the eight I have mentioned, would he have a good collection?