@FullRangeMan asked me to post these photos here which I also have on the For Sale forum.
National Union 226 DHT globe preamp tubes. These were purchased as NOS for a preamp project that I never got to. I did end up buying an 01A preamp which used similar ancient tubes. Amazing how these hold up and make great sound. I still use a globe rectifier in my Lampizator DAC.
These have the original sales stickers on them dated 1933. Very cool...
Best,
Paul



