The first serial numbers started in 1902 and ran until 1947.
The serial numbers started with 100 and went to 99999. In most cases, only the high end instruments were assigned identification numbers.
Other than the first four digits noting the year, it's decoded the same as the 9-digit serial numbers.and the workshop of origin, it is necessary to first identify the ‘era’ in which it was made. Since we were true to our times and rather ‘laid back’ about everything other than the guitars themselves, we do not have extensive detailed serial number archives for the early years.However, since production numbers were so very small in those days, the math is not all that difficult!I was happy with the voicing of the bracing, craftsmanship, general design and most of all, tone, of these guitars.” Guitars are built under License from George Lowden by the S Yairi, Nagoya workshops, Japan Guitars with this label were built between 1980-1985 in a small Japanese workshop under license to George Lowden. In 1980, our Swiss dealer asked George if he could source a small and expert company to make his guitars under license, so they would be more widely available.“Thus began a five-year period when my guitars were made in Japan by a small, dedicated band of luthiers near Nagoya. Yairi workshop regularly to give the designs and check quality.