1976 to 1981 #0001 to #0680 - A Total of 680 guitars all Custom Shop guitars or custom made for someone special etc etc. All of these instruments have a stamped into the wood 4 digit serial number
Hamer Numbering System # 2
1977 to Present Day This system would have at least a 5 digit number with a space between the first and second digit example 2 2047 This would be a 1982 guitar the 2,047th guitar ever built not including the 680 custom guitars that used the original serial number system.