Majestic On-Field Authentic FlexBase New York Mets jersey, signed on the back in silver marker by 2019 NL Rookie of the Year Pete Alonso.

The jersey is size 48 which is the best size for framing.

Signed at an official paid private autograph session.

Affixed to the jersey is a numbered tamper-proof hologram from MLB Major League Baseball Authentication (which proves that the jersey was signed during Alonso’s Rookie Season.

Sold with a Certificate of Authenticity from  The Autograph Source (Lifetime Guarantee).

  A Letter of Authenticity from independent  third-party authenticator Beckett Authentication Services (BAS) is also available for $40 more (allow 3-4 extra weeks for authentication) .