This lot includes three USPS PO mailbox brass postal combo door locks that measure 5" x 3 1/2". Each lock is made of high-quality brass and has a unique combination for added security. These locks are original and have been well-maintained, making them a great addition to any postal antique collection. They were manufactured in the United States and have the USPS brand name on them. The locks are perfect for still banks and other collector's items. Instructions are provided to reset the combination lock.