Matt Zullo (ontheroofgang.com) would like to acquire a couple of receivers for an exhibit he is organizing for the National Cryptologic Museum at Ft Meade. He's looking for models that would have been used by the Navy's intercept stations reading Japanese traffic pre-war. 

An RAA or RAB would be really cool, but probably impossible to find. A nice early-model RAS and RAO are also appropriate since they were used by the intercept sites.

He's willing to pay a reasonable price or you could make a donation to the museum.

I'm just helping him out even though my collection is all post-war stuff.

Please let me know if you have a spare that needs a good home....