Ruben Sierra made 4 All Star teams and played for 9 different teams in a 20-year career. This signed game used Louisville Slugger model G157 bat dates to the 1990 season. This absolute beauty of a bat is PSA Authenticated and received a PSA GU 9.5 (1B24683). There are only 4 Sierra bats in the PSA database that are GU 8.5 or better! It measures 35.0 in. and 32.6 oz. and exhibits outstanding use with a crack on the lower barrel. Sierra's No. 21 is written on the knob. The bat is autographed on the front barrel in black marker. PSA Letter of Authenticity is included. For those new to the hobby, PSA is an industry-leading bat authentication service. Your bat's serial number can be searched in the PSA online database and your PSA Letter of Authenticity provides further valuable information on the bat. Having the bat authenticated and/or graded increases its value and makes it much easier to sell the bat in the future. Before purchasing, please examine all pictures and contact us with any questions. We guarantee your satisfaction with every bat we sell. If for whatever reason you are unhappy with your purchase, we offer a 7-day money back guarantee. Shipping is fast and free!