A certificate number is a unique number assigned to a document or certificate. It helps identify and track the specific certificate from others. Full definition
The name, business, address, telephone number, and certificate number of your lender, and your name and address. (titlelo.com)
You may redeem your gift certificate online by entering the gift certificate number into the Special Instructions box on the checkout. (mountainroseherbs.com)
The transfer agent will know how many shares you have, the stock certificate numbers, and have all your contact information. (thecollegeinvestor.com)