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Century Model A-C (Century of Progress). Factory Order Number 270C 8.
John R. Barmeyer Collection, 2005.
The Century Model A-C mandolin was one of three models (the other two were guitars) made by Gibson to commemorate the 1933-1934 Century of Progress Exhibition in Chicago. Based on Gibson's popular pear-shaped Model A, the A-C featured a special pearloid fretboard and maple back and ribs.
Inscriptions: Inlaid in mother-of-pearl on headstock: Gibson
Stamped in cursive lettering on tailpiece: The / Gibson
Rubber-stamped in black ink on neck block: 27.0. C / 8 [written in pencil]
Body: Pear-shaped. Soundboard: two-piece spruce: medium grain broadening slightly toward the flanks. Back: flat, one-piece, slab-cut maple: irregular broad curl descending from treble to bass. Ribs: two-piece, slab-cut maple: plain on bass side; faint, broad curl on treble side. Head: mahogany veneered with white pearloid and T-shaped rosewood piece, bound in white celluloid with black celluloid purfling strip; rosewood inlaid with mother-of-pearl notched diamond and mother-of-pearl "Gibson"; pearloid, bell-shaped truss rod cover secured with nickel-plated steel slot-head screws. Neck: mahogany; integral with head.
Inlay: Binding: white celluloid. Rosette: oval; three-ply (white-black-white) celluloid purfling strips set in from inside edge; edge bound in white celluloid. End graft: none.
Trim: Heel cap: none; neck heel flush with back. Fingerboard: white pearloid bound in white celluloid with black celluloid purfling strip; 20 nickel-silver frets; rosewood block inlays behind 3rd, 5th, 7th, 10th, 12th, and 15th frets; three mother-of-pearl diamonds inlaid in rosewood blocks behind 3rd, 10th, and 15th frets; two mother-of-pearl diamonds inlaid in rosewood blocks behind 5th, 7th, and 12th frets; single imitation tortoise-shell celluloid side dots behind 3rd, 5th, 7th, 10th, and 15th frets; double imitation tortoise-shell celluloid side dots behind 12th fret. Nut: bone. Bridge: two-piece ebony with brass screws. Tuners: two sets of chrome-plated steel worm-gear machine tuners; nickel-plated brass heads. Endpin: ebony with mother-of-pearl eye. Pick guard: imitation tortoise-shell celluloid. Lacquer: dark red-brown sunburst with fine craquelure.
Interior: Linings: kerfed maple. Neck block: mahogany, curved to fit upper bouts. End block: mahogany. Top bracing: one spruce top brace with tapered ends. Back braces: one spruce back brace with tapered ends.
Measurements: Total mandolin length: 651 mm (25-5/8″)
Back length: 347 mm (13-21/32″)
Upper bout width: 62 mm (2-7/16″)
Lower bout width: 256 mm (10-1/16″)
Rib height (including edging) at heel: 47 mm (1-7/8″)
Rib height, at waist: 45 mm (1-25/32″)
Rib height, at end block: 47 mm (1-7/8″)
Head length: 162 mm (6-3/8″)
Head width, top: 73 mm (2-7/8″)
Head width, bottom: 58 mm (2-9/32″)
Neck length (nut to ribs): 153 mm (6″)
Neck width, nut: 30 mm (1-3/16″)
Neck width, heel: 38 mm (1-1/2″)
Soundhole height: 41 mm (1-5/8″)
Soundhole width: 65 mm (2-9/16″)
Vibrating string length (nut to bridge edge): E: 353 mm (13-29/32″); G: 634 mm (13-15/16″)
|Guitar by Gibson, Inc., Kalamazoo, 1936. Century Model HG-C.|
|Guitar by Gibson, Inc., Kalamazoo, 1938. Century Model L-C.|