Postage Paid Stamp - EDDM - ECRWSS - Presorted Postage Stamp Postage Paid Stamp - EDDM - ECRWSS - Presorted Postage Stamp Postage Paid Stamp is 1" x 1" and is a self-inking stamp that is perfect for rapid impressions. Stamp is ONLY available in BLACK ink due to the United State Postal Service guidelines. Manufactured in Jacksonville, FL. Order today. Ships tomorrow. PLEASE NOTE: You must have an account with the USPS to use.