It is also stamped 5032, the same number (and stamp) as inside the cabinet on the front baffle, showing this is the original speaker to the amp. The final 2 in the number dates manufacture of the amp to 1962.
TUBES: 2 x 12AX7 2 x 6V6GT 6AU6 6X4
JUAN SAYS: "Quite dark sounding. I'm impressed with the low end. The Tremolo is great. I love it! My favourite of the 4 amps!"
GIBSON SKYLARK (1963)
MADE BY: GIBSON, USA.
MODEL: GA 5 SKYLARK 'Crestline'
OUTPUT POWER: 10 W
SPEAKER: 10" Gibson Ultrasonic Speaker.
SPEAKER MARKINGS: 581 0034 S-20008
TUBES: 6EU7 6C4 2 x 6AQ5 6X4
JUAN SAYS: "The brightest sounding of the four amps."