[See update below]
Many thanks to SWLing Post contributor, Dan Robinson, who writes:
This NOS 51-S1 is headed for a record price for an Ebay sale. I have only seen one of these in this condition in my decades on Ebay. This is a rare rack version complete with box and original accessories. The preselector, also NOS, sold earlier today:
I’ll watch this auction just to see how high the price goes. At time of posting, it was at $4,850 US (plus shipping):
UPDATE: The winning bid was $5,500 US plus $56.19 shipping:
