Serial number 83391 was stamped on February 10, 1943 and cleared final inspection on April 9 that year.
The tuners are Kluson 502 machines with white celluloid buttons. The backing plates still retain the stamped rim seen in earlier Klusons machines. Later war-time Klusons had plain backing plates.
Typical of war time Martin guitars the neck has ebony reinforcement rather than a steel T-bar.
Style 17 features:
Back and sides: Mahogany
Purfling: Single white line
Binding: Mahogany (?)
Other period features:
Rosewood straight bridge
Decal on front of the headstock
No C. F. Martin stamp on the back of the headstock
No tuner bushings on front of headstock
At the time of writing this guitar is available at Schoenberg Guitars http://www.om28.com/ProductDetail?product=P150626004
Photos courtesy of Schoenberg Guitars.