There are boxes of new and used and unused valves just started to list them he did have a valve tester so probably good
A E I Ediswan Mazda Semiconductors Abridged Technical Data 1960
ECC81 12AT7 RFT MAZDA NOS BOXED VALVE TUBE (LC19)
Mazda ECC83 Valve – NOS Boxed – Vintage Audio / Guitar Amp Tube X 2
Mazda ECC83 Valve – NOS Boxed – Vintage Audio / Guitar Amp Tube x 8
Mazda ECC83 Valve – NOS Boxed – Vintage Audio / Guitar Amp Tube
4x 0.022uF 400V K40Y-9 PIO Capacitors Paper in Oil - Guitar Tone / Audio Amp
