- Pair of Vintage Amperex Bugleboy 12AX7/ECC83 Vacuum Tubes 60s vintage
Made in Heerlen Holland as indicated by the etched consecutive date codes of
165 6F3
165 6F4
Both have the number 637 as well
Also labelled Made in Holland
Good logos though one has a tiny bit of wea
14 mm grey vented ribbed plates, dual spacers, ribbed top seams, large halo wire getter frames and top getter flashes
Pulled from vintage audio and tested on my mercury 204 tester
Test strong, very close, and free of gas and shorts.
I pack well and ship airmail