CSN CROSBY STILL NASH SIGNED FILLMORE CONCERT POSTER 1997, (PURPLE) ACOA COLLECTIBLE MEMORABILIA

Every item in our collection is authenticated before listing. Each purchase includes a Certificate of Authenticity card and a tamper-proof dual hologram sticker - one on the item, one on the COA card - with matching serial numbers. Backed by our lifetime guarantee.

Our authentication process

AutographCOA (ACOA) is a leading authentication firm specializing in music and entertainment autographs. Their examiners combine forensic handwriting analysis with one of the industry's largest exemplar databases. Accepted by major auction houses and collectors worldwide.

Your ACOA COA includes a unique certificate number you can verify directly on their website.

Learn about ACOA authentication