Martin HD28

The HD-28  introduced bvy Martin in 1976 replicates pre-1947 "'bone" D-28s with herringbone purfling (then manufactured only in pre-war Germany) and scalloped braces*. It is an extremely popular guitar with a full sound, good balance between bass and treble. 

*The early D-28 had a strip of marquetry (with a distinctive “herringbone” pattern) running around the top. This decoration led to the current designation, “herringbone D-28” which one hears reverently discussed among Martin fanciers. (It is basically the same instrument as today’s HD-28.) In addition, bisecting the back was a “zipper” decoration strip of purfling, which is different in appearance than that found on modern D-28s. The herringbone purf ling was discontinued on style 28 guitars in 1947, due to a matter of history and economics: The purfling was manufactured in pre-World War II Germany and was not replaceable from American sources. When the stockpile ran out, D-28s (and all style 28 guitars) were subsequently treated to a new decoration scheme of alternating black and white celluloid originally used on the Martin arch-top
C-2 model. Only one herringbone

The herringbone purf ling was discontinued on style 28 guitars in 1947, due to a matter of history and economics: The purfling was manufactured in pre-World War II Germany and was not replaceable from American sources. When the stockpile ran out, D-28s (and all style 28 guitars) were subsequently treated to a new decoration scheme of  alternating black and white celluloid originally used on the Martin arch-top
C-2 model.