Serial number 41927 was stamped on March 21, 1930 and cleared final inspection on May 13 that year.
The banjo tuners are modern replacements while the white celluloid buttons are original.
The ebony pyramid bridge is a modern replacement made by luthier TJ Thompson.
Back and sides: Brazilian rosewood
Top: Red spruce (Adirondack)
Binding: Black celluloid
Backstripe: Zig-zag pattern
14-fret neck with 25.4" scale length
Neck 1-3/4" wide at nut
Small "OM" pickguard
Other period features:
Advanced X-bracing with scalloped braces
Ebony pyramid bridge (the first ebony belly bridge appeared on guitars stamped in early April 1930)
Diamond and square Japan pearl fingerboard inlays
Ebony neck reinforcement
Nickel silver bar frets
"C. F. Martin & Co." stamp on back of headstock
No style stamp