Manufacturer and factory: Siemens Munich
Code: A1 6A
Year of production: 1966
Structure's features: double stage getter, silver shield, gold pin
Rating : 1
Original package : yes
One of the last ultra rare CCa (not fake) on the market. The A1 second version Probably lightly used but very hard understand because the CCa is an 20000 (at least) hours life tube !
PRICE FOR SINGLE TUBE WITH PERFECT BALANCED SECTION
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