LM Ericsson 5591 / 403B / 5654W Pair – NOS Swedish Military “Western Electric of the North” – Matched Pair. Type: 5591 (Premium High-Reliability 403B / 6AK5 / 5654W / EF95). While later manufacturers moved toward cost-cutting, these early-batch survivors feature.
Item Tag: Ericsson
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LM Ericsson 5591 403B NOS Tubes – ELITE PAIR – Amplitrex 4500Gm/90% – 1961
LM Ericsson 5591 / 403B / 5654W Pair – NOS Swedish Military “Western Electric of the North” – Matched Pair. Type: 5591 (Premium High-Reliability 403B / 6AK5 / 5654W / EF95). While later manufacturers moved toward cost-cutting, these early-batch survivors feature.