Tom Mack, former Hall of Fame offensive guard for the Los Angeles Rams, has hand signed this blue custom jersey at a private signing. Jersey is size XL and all letters/numbers are sewn-on. This item comes with a certificate of authenticity (COA) from JSA - James Spence Authentication and was signed in the presence of one of their representatives. You will receive a serial-numbered COA along with a matching serial-numbered sticker on the jersey. The authenticity can be verified online by entering the serial number.Item pictured may not be the exact item you will receive. It will be similar quality, and we guarantee your satisfaction.