The first two numbers indicate the day of the month.
The last three numbers represent order of production on the day the guitar was made. ” To you folks, we offer the following: Several other serial number configurations used by Yamaha over the years.
The second letter is the month and also follows the same system as the main system above. For example: QNK026C This guitar in the example serial number was the 26 guitar built in April of 2007. If you’re serial number doesn’t seem to match any of the above, you’ll need to contact Yamaha to see if they can tell you about your serial number.
Note: The following only applies to acoustic, acoustic-electric and classical guitars.There is a different system for electric guitars and bases.These were just sequential serial numbers from 001 up to 1042. The fourth and fifth numbers represent the day of the month. Because there is only 1 number representing the year, there are possible duplicates using this system.The letter at the beginning represents the month, so J would be March (see chart above). Custom Shop, Made in Japan, 1991-1996: Letter-letter-###-letter, like so: HP213J. 111 is the unit number; and the final letter is an internal code. During 1999, they starting the count each month at 200 rather than 500. Tenryu/Wada Factory, Made in Japan, 1946-1968: #####. The number following the letter is the year, in this case . Using the charts, we see that H=1991 and P=September. Custom Shop, Made in Japan, 2004-: Letter-letter-letter-###-letter, like so: QLY111C. Yamaha Music Craft, Made in Japan, 1997-1999: Letter-letter-###-letter, like so: ON521J. (See previous entry for Yamaha Music Craft for more on the numbering.) Yamaha Music Craft, Made in Japan, 2001-: Letter-letter-letter-###-letter, like so: QIL123A. If yours doesn’t you’ll need to keep reading to decipher it.