Serial number 101621 was stamped on August 12, 1947 and cleared final inspection on December 23 that year.

The tuners are Kluson 210 machines with rounded metal buttons.

The bridge is a replacement and the pick guard is oversize and is probably not original.

Style 21 features:

Back and sides: Brazilian rosewood

Top: Sitka spruce

Purfling: Lines

Binding: Tortoiseshell celluloid

Backstripe: Herringbone

Other period features:

Straight X-bracing

Brazilian rosewood fingerboard

Brazilian rosewood belly bridge

Steel T-bar neck reinforcement

1-11/16" neck width at nut

Tortoiseshell celluloid pick guard

Dot fingerboard inlays

Decal on front of headstock

No C. F. Martin stamp on back of headstock

Style stamp

Photos courtesy of Schoenberg Guitars