Custom For Deposit Only Stamp (2 Lines) Custom For Deposit Only Stamp (2 Lines) To customize, please click on the 'Customize Now' button on the right and input your text. Impression size on this endorsement stamp is perfect size to fit on the back of a standard sized check. For Deposit Only Stamps are an easy and accurate way to endorse your checks and bank deposits. Clean, easy to use, self-inking stamp. No mess, ink built into the stamp.