The Gibson JUMBO 35 (J-35) was made between 1936 and 1942. The J-35 had Brazilian rosewood back and sides with a spruce top. Finish options were natural or sunburst. The Gibson 1939 catalog describes the model as follows:
JUMBO “35” FLAT TOP AND BACK.
THIS model with its harmonious singing brilliancy appeals to those players who wish to make a smaller investment in an instrument for voice accompaniment and small combination playing.
SIZE: 16" wide, 20.25" long and 4.5" deep.
WOODS: Genuine mahogany back, rim and neck; spruce top; rosewood fingerboard with 19 frets.
FINISH: Natural spruce top: high lustre natural mahogany back, rim and neck.
TRIMMINGS: White ivoroid binding around top and bottom edge of body; purfling around sound hole; pearl position marks.
FITTINGS: Inlaid brown celluloid finger-rest; reinforced bridge with white pins and offset bone saddle; nickel plated machine heads with white buttons; ivoroid side position marks; white and pin.
Price: $37.50
CASES: No. 118—Challenge, side opening purple flannel lining. $6.50. No. 418—Faultless construction—waterproof imitation black leather covering-purple flannel lining. $18.00.