Here is one of the rarely seen 12-fret D-28 guitars. It is also one of the very last regular 12-fret D-28s made (although a few more 12-fretters were made on special order in subsequent years).
Serial number 55082 was stamped on December 29, 1933 and cleared final inspection on January 23, 1934.
This might also be considered a special order guitar as it originally had the name "Lee" inlaid in pearl in the fingerboard (one photo show the fingerboard with the name inlay).
The guitar differs from other 12-fret D-28 guitars because it has a solid headstock and a neck width of 1-3/4" at the nut (as opposed to the slotted peghead and 1-7/8" wide necks of earlier examples). This guitar was made only a few weeks before the first 14-fret D-28 so it may be that Martin was experimenting with dimensions and features.
The tuners are Grover G-98 clipped plate machines with seamed butterbean buttons.
Back and sides: Brazilian rosewood
Top: Red spruce (Adirondack)
Other style 28 features: herringbone purfling, white celluloid binding, zig-zag backstripe
Photos courtesy of Gruhn Guitars