November 2023 to Present
New style of hologram sticker used on items signed by Nolan Ryan through the Nolan Ryan Foundation beginning November 2023.
Prior to November 2023
Style used on items signed by Nolan Ryan through the Nolan Ryan Foundation prior to November of 2023. This previously issued hologram sticker is still valid and will continue to offer counterfeit protection.
The Nolan Ryan Foundation will honor either of these hologram stickers as a valid Certificate of Authenticity.