Understanding the Martin Line
The initial letter(s) usually stand for the body size/type.
D = Dreadnought
J = Jumbo
M or 0000 = Grand Auditorium
000 = Auditorium
OM = Orchestra
00 = 00
B = Acoustic Bass
5 = Size 5 Terz
Other style options include:
C = Cutaway
12 = Twelve-string
H = Herringbone
HP = Herringbone pearl
V = Vintage
Note: Hyphen (-) separates size prefix from style prefix.
Ornamentation
The number after the letter designates the ornamentation or series styling.
The higher that number, the fancier the guitar.
Ornamentation styles of our Standard & Vintage Series models:
18-28-35-40-41-42-45-50-100.
Other styles run:
X-Road-1-15-16-17.
Special Features
The letter after the number denotes a special feature.
S = 12-fret neck to body juncture
GT = Gloss top
N = Nylon strings (Classical)
E = Electronics
Other special features:
A = Thin body
DB = Deep body
LS = Large soundhole
Additional Information on Size/Types