I bought 2 LPs from American Autograph Autentication Service of Redmond, Wa on Ebay and they came with Certificates of Authority. Is/Was this a reliable company?
No, unfortunately, they are not reliable. They are or were the authentication company for Autographs America, which as far as we know sells nothing but forgeries. Upload the albums if you'd like and get some opinions. Sorry to give you bad news.