Vintage 1959 SECO Tung-Sol Model 78 Tube/Grid Circuit Tester In Case~Untested for Sale

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Vintage 1959 SECO Tung-Sol Model 78 Tube/Grid Circuit Tester In Case~Untested For Sale

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Vintage 1959 SECO Tung-Sol Model 78 Tube/Grid Circuit Tester In Case~Untested:
$69.00

Vintage Late 1950s / Early 1960s Tung-Sol Model TS-78 Tube Tester (SECO Model 78 Grid Circuit & Tube Tester) - Untested / Cosmetically Complete.

Up for sale is a fantastic piece of mid-century electronics history: a vintage Tung-Sol Model TS-78 Tube Tester, featuring the highly regarded SECO Electronics Model 78 Grid Circuit internal test bench setup. Manufactured in Minneapolis, Minnesota, this highly portable field unit was the go-to diagnostic tool for TV/radio repair technicians and audiophiles during the golden age of vacuum tubes.

Cosmetic Details & Features:

Faceplate & Controls: The internal faceplate is exceptionally clean, with bright, legible white lettering against a classic dark backdrop. All original control knobs (Filament Volts, Switch R, Load, and Function Switch) are present and turn smoothly.
Analog Meter: The central analog display meter is structurally intact with clean, un-faded color-coded scaling (Good/Bad merit and grid path arcs).
Setup Data Index: Includes the original, built-in metal ring binder setup booklet packed with original Tung-Sol index data cards (showing settings for classic tubes like the 1AX2, 6AU6, etc.). The cards remain bound, legible, and intact.
Case & Portability: Housed in its classic textured dark blue Tolex-style carrying case with its rugged blue handle and original metal latching hardware. The exterior shows honest age-appropriate vintage wear (minor scuffs/edge rubbing), adding beautiful character for display or restoration.
Power Cord: Comes attached to its original power unit is being sold strictly AS-IS, untested for parts, restoration, or vintage display. It was sourced directly from a local estate and has not been plugged in or powered on to ensure the safety of its vintage internal components (such as transformers and original capacitors). No further diagnostic testing has been performed.
Whether you are looking for a rewarding winter restoration project, a reliable source of vintage parts, or a gorgeous mid-century display piece for your guitar shop or radio workbench, this complete Tung-Sol unit is an excellent find.
Shipping: Packaged with extreme care using heavy-duty bubble wrap and a sturdy box to ensure safe transit. Ships promptly from North Georgia. Please review the high-resolution photos for a precise look at the cosmetic condition.

Vintage 1959 SECO Tung-Sol Model 78 Tube/Grid Circuit Tester In Case~Untested
$69.00

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