This thunderous 30-year-old HD-28 sounds glorious, a flat pickers dream! Over the decades it's been well used but wears the patina well.
The difference between the D28 & HD-28 is for the most part cosmetic. The HD has Herringbone inlays neighbouring the binding where the D-28 has a simpler black/white stripe design - the H in HD-28 stands for Herringbone. The standard D-28 used to feature Herringbone but it was removed to save money. In the mid '70s Martin released the HD-28 to satisfy customers after a D-28 that was more reminiscent of the "Golden Era" models of the '30s/'40s. The HD-28 also features more elaborate purfling.
Sound-wise the HD is set apart from the standard D by having scalloped bracing enabling the top to vibrate more freely - this leads to a bassier sound.
Includes original Martin hard case.