Extremely Rare, 1 of a Kind Dan Armstrong Pickup Prototype Parts Lot

Approximately 5 years ago, the family of Dan Armstrong auctioned less than 2 dozen pieces from Dan's former workbench. Out of those pieces, about half were prototypes, and out of those prototypes only four were v.1 two-conductor type, rather than typical Armstrong 'slide-in' style. Offered for sale are the parts associated with prototype "#1"-  magnets, baseplate, spacers, two sets of windings- everything pictured. Patent number dates it to 1981. 

SKU# 4718