Every Somerset Fine Art limited edition is signed and numbered and arrives with a Certificate of Authenticity, which guarantees the edition size and that the print is the only print with that number in the edition. Certificates of Authenticity are printed on acid-free paper so they may be stored safely within the jacket of paper prints. It is advisable to request that the Certificate of Authenticity be attached to the back of a limited edition to maintain its collectibility. Family Owned & Operated ourhousehawaii@yahoo.com