6021 Sylvania Medium Mu Twin Triode Tube. Designed for use as an amplifier in high and UHF circuits. New old stock. No longer available for export. MFR: Sylvania. SKU: 6021.
6021 TUBE | eBay
6021=CV3986 Mullard UK Mitham plant NOS 1969 matched pair (Audio Aero)
5x Pcs. 6021 6021W 6021wa CEI NOS Tube Röhre Triode USA Audio online kaufen | eBay