Hamer Custom Instrument Certificates
Starting on May 13, 2003 Hamer started issuing Custom Order Certificates for all instruments with custom features. These certificates list the serial number, the customer for whom the guitar was built, and all custom features. They are signed by both Frank Untermyer and Jol Dantzig of Hamer Guitars.
Certificates of Authenticity have also been included with USA-made instruments for a number of years.