Five six-string models and one twelve-string model have been identified. All are of solid wood construction. The most commonly found model is the 9000. Click on an image to view the gallery F907 (000) FW913 Dreadnought 9000 Dreadnought W-130 Dreadnought W924 12-String Dreadnought JW837 Jumbo Numbers on the neck-block inside the guitar appear to follow two different schemes: On models F907 and FW913, the number appears to be the date of manufacture On other models, itappears to be a serial number