Hi if registered your safe when purchased with Sentry, you can log in to your Sentry account again retrieve the information from your account. Otherwise will have to fill out and have form notorized and send back to Sentry to have them give you the combination - https://www.sentrysafe.com/customercare/lost_your_combination
Can Email:XXX@XXXXXX.XXX , Fax:(NNN) NNN-NNNNor
Mail: Sentry Group
Rochester, New York 14625
Once have received the completed and notarized form to confirm ownership of the safe, Sentry will give you the issued combination code.