I am selling my 300b amp custom built a few years back.
I have Angela Instruments transformers
Musicaps, 5v/2.5v transformers for using 2A3 or 300b tube
All copper chassis with internal shields and dividers. Copper bottom cover
and
all stainless screws.
I will sell with or without tubes.
Make offers
I have references if needed. (Ebay)
http://home.comcast.net/~johnsciolino/image19.jpg
http://home.comcast.net/~johnsciolino/image18.jpg
for spam reasons only, will reply with real email