HEWLETT PACKARD COAXIAL CRYSTAL DETECTOR MODEL 420A 420 A HP AGILENT

This listing is for a Hewlett Packard Crystal Detector Model 420 A. 

Some light marks from tape and has a label.  Other than that very solid and beautiful. This came from a trusted working collection.  I have other items for sale from this very working collection.  Just look at my 'sellers other items'.