The remaining four digits denote the instrument’s sequential number of manufacture among all the instruments made during the month indicated.
For example, serial number 07100091 indicates a guitar built in 2007 (07), in October of that year (10), and that it was the 91st guitar made that month (0091).
__________________ Larrivee OM-03RE, D-03R-12, LS-03 (IS/MH) Martin D-35; Guild F-212; Tacoma Roadking Breedlove American Series C20/SR Rainsong SFTA-FLE (AGF Shorty) Rainsong WS3000 Taylor GA3-12, Buy some candy, buy some flowers, dress properly, be polite, show up on time, get some decent cologne, make sure there's no food stuck between your teeth.........that kinda stuff can really help.
__________________ Guild D40 Bluegrass Jubilee (Tacoma) Guild D50 Bluegrass Special (Tacoma) Guild D25 (1973) Guild JF30 (Westerly) Guild F412 (Tacoma), 12-string Guild F50R (Corona) Martin D18 Golden Era 1934 Composite Acoustic (CA) Cargo (carbon fiber) Gretsch Bobtail (round neck) Blueridge BR70AS Gretsch Pro Jet Squire Classic Vibe 50s telecaster several banjos!
page=1) Be aware that these numbers — while considered by most authorities to be accurate — may be substantially off.