This Autographed Display & Matted 1.35x4.75 Cut Signature with the inscription of "Yours Truly, 24 South Audley, 28 July 1837" has been Personally Signed by Mary Shelley. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. This item has been professionally matted to an overall dimension of approximately 9.75x13 inches. Press Pass Collectibles only offers Authentic Autographs by Mary Shelley through Signings, In-Person Signings or Private Collections to include a 100% money back Lifetime Authenticity Guarantee.