PROVA Partners - Working Together for a Better Collecting ExperiencePROVA Partners


Radtke Sports

If you want guaranteed authentic, hand-signed memorabilia, our partner, Radtke Sports is the place to go. Our unique partnership with them gives us the opportunity to showcase our authentication services and more.


Notable Live

Our partner, Notable Live fuses LIVE! video interaction with event-like features to create a one-of-a-kind experience that puts you “in the room” with your favorite notables. All memorabilia sold by Notable Live is authenticated by PROVA, and collectors can easily access all Notable Live offerings via one of our affordable Digital Showcase subscriptions.

CSA Shows

CSA Shows

Each show at CSA Shows in Chantilly, VA, features public and private signings with your favorite sports and pop culture stars. In partnership with CSA Shows, PROVA provides cutting-edge authentication and a connection to stars you can’t get anywhere else!