Serial number 74767 was stamped on April 11, 1940 and cleared final inspection on October 8 that year.

The tuners are Waverly 5038 mchines with rounded metal buttons. These tuners have a distinctive backing plate and are sometimes called "Yoda head" machines.

Style 18 features:

Back and sides: Mahogany

Top: Red spruce (Adirondack)

Binding: Tortoiseshell celluloid

Purfling: Lines

Other period features:

Scalloped bracing

Ebony fingerboard

Ebony belly bridge

Steel T-bar neck reinforcement

Nickel silver T-frets

Dot fingerboard inlays

Style stamp

No "Made in USA" on back of headstock

"C. F. Martin & Co." decal on headstock

Dimensions:

Lower bout : 14-7/16"                                  Upper bout: 10-13/16"

Body length: 18-13/16"                                Scale length: 24.86"

Depth of body at neck block: 3-5/16"      Depth of body at end block: 4-1/16"

Neck width at nut: 1.69"                             String spacing at bridge: 2.14"

Photos and dimensions courtesy of Ted Hutson