Description

One Tested 56 Silvertone Globe Balloon Audio Receiver Preamplifier Vacuum Tube Country of origin: USA Production era: 1930s Model: 56 Manufacturer: Silvertone Type: Preamp / Driver Plate type: round black Base type: Engraved UY 5 pins Spacers: two Getter frame: solid getter cup Getter flash: base Filaments: standard Glass: clear Stencils: very good Condition: excellent Usage: Moderate Cartons: NA Quantity: 1 Please review the photos for more detail Test results: Excellent strong test result for Gm: .95 For Gm, the suggested minimum value is: .71 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in guitar amplifiers, preamps and general audio equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information