For sale is a a great pair of NU-845 Triodes. These are boxed and labeled National Union but the etch and tube design are that of RCA.

Made by RCA labeled for NU

These both have the same date codes 5152.

Unfortunately trying to remove some of the packing that was stuck to one tube I cleaned off one of the tube date codes. Nevertheless they are indeed matching codes.

Comes with original packing and original boxes. I believe these tubes to be NOS with no discoloration and nice clean pins and tight bases. Slight scratches on the bases.

Domestic and international shipping will include full insurance.

I have no way to test these further than a filament check (which is GOOD).