In mid/late 2012, US distributed Japanese-built guitars switched to the year designation that guitars distributed in Japan use.
See below for the formula used to tell the year of manufacture.
If you are calling with a warranty issue, please be prepared with the i) serial number, ii) model and iii) date purchased.
This will aid us in assisting you as quickly as possible.
The following two digits denote the month, and the remaining four digits denote the instrument’s sequential number of manufacture among all the instruments made during the month indicated.
Long overlooked and relegated to an obscure corner of the collectible market, Sigma by Martin guitars have recently gained popularity among a new generation of collectors.
The last Adolphe Sax saxophone recorded in the Selmer Paris archives was sold in 1944.
The log book shows the serial numbers jumping around quite a bit for the Selmer/Adolphe Sax saxophones.
All other text was printed in black ink, or stamped on in ink by the manufacturer (model and serial numbers.) 5-digit, or 8-digit serial numbers. Being a mid-year change, some continued on with the "Purple" label, though with the new serial number designation preceded by an "S" or an "E" This is prefixed by the serial number assigned to the instrument and followed by an ink stamp of the model number. L-R as seen through the sound hole: Serial number, "Brand," Model number.) The serial numbers on these instruments were often preceded by the letters S or E; e.g. It is currently believed that this transition was complete by 1979.
This is especially true of unusual, special (sample/prototype models) and/or low production number models (e.g.: DT-30.) The 'Gold' label: The next generation of labels are transition labels that are white w/Sigma and three horizontal lines in gold ink, the Greek sigma in black and printed black text (Made for C. The Σ symbol now also in this same pink/purple color.
The first two digits designate the year of manufacture, followed by two digits denoting the month.
The remaining four digits denote the instrument’s sequential number of manufacture among all the instruments made during the month indicated.