Black-skirted 1-10 replacement amplifier control knobs with white stamping and silver center disc. Used on Blackface era amplifiers and ’65 Twin Reverb®, ’65 Deluxe Reverb®, ’65 Princeton Reverb®, ’65 Super Reverb®, ’64 Vibroverb®, Pro Reverb®, Princeton Recording Amp®, Concert®, Super®, Custom Vibrasonic®, Showman®, Showman 50®, ’94 Twin®, Bassman 300®, Bassman 100T®, Super Bassman®, Sunn® Model T, Sunn® 300T and Sunn® T50C amplifiers.