Rare 1960"s Red tip Medical grade 6072 tube. 3-mica blackplate... C12/ 251 builds. Avantone/Apex, etc. Strong and balanced! | Reverb
12AX7 - Wikipedia
Electro-Harmonix 12AY7 Preamp Tube - AmpTubes for all your tube needs
G.E ONE (1) 6072 mic dual triode tNOS AT1000 TESTED Vacuum Tubes 5-star military triple mica balanced premium 12AY7 Audio 1959-1968 | Reverb Italia
Tube-Town Store - JJ 12AY7 / 6072
6072A RCA Twin Triode Tube. Special version of the 12AY7. Made with three pieces of mica, halo getter, and black anode plates. MFR: RCA. SKU: 6072-RCA. New old stock. No longer available for export.
Tube type list
Slovakia JJ /12AY7 /EL84 /12BH7 electronic tube on behalf of 6072 /6P14 /6BQ5 electronic tube new authentic precision matching - AliExpress
Tube 12AY7 \ 6072 JJ Selected tube. Laboratorio Musicale
Electro-Harmonix 12AY7 Preamp Tube - AmpTubes for all your tube needs