This is a Gerber Folding Sportsman IID Lockback. The tang has Gerber and the reverse tang has Portland, OR., 97223 USA. The blade is etched Collectors Firearms, Houston, Texas, special edition of 50. This knife has polished brass bolstersand has the SN0001 on the butt bolster. This pre 1980 knife is in mint condition and comes with the original box, which shows a little wear.