This Autographed 2017 World Series Manfred Oml Limited Edition #47/50 Baseball with the inscription of ".379 BA, 7 RBIS, 5 H, 17 WS MVP" has been Personally Signed by George Springer of the Houston Astros. This item is 100% Authentic to includes a numbered hologram by Fanatics. The authenticity can be verified on Fanatics website.