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Eico 635

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eBay

GE 6D10 Compactron Vintage Triple Triode Tube - Eico 635 Tested @ NOS++ ! £22 Dec 7, 2025

eBay

RCA 6J11 Compactron Vintage Tube - Eico 635 Tested @ NOS++ !!! £3 Dec 7, 2025

eBay

GE 6D10 Compactron Vintage Triple Triode Tube - Eico 635 Tested @ NOS++ !!! £22 Dec 7, 2025

eBay

Vintage Sylvania 6KM6 Vintage Sweep Tube - Tested Eico 635 Superb £14 Oct 21, 2025

eBay

Rare Original EICO Portable Tube Tester Model 635 Assembly Manual w/ MANY EXTRAS $65 Sep 14, 2024

eBay

EICO Operating Instructions & Tube Data For Model 635 Tube Tester 56E38 $59 May 19, 2024

eBay

EICO Model 635 Operating Instructions Vintage Booklet 20D65 $89 Dec 24, 2023

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