Taking offers for an NC57 bottom cover.....
 

Hi All,
Just goes to show that moving DOES have its good side. While packing, I
found what appears to be an original National bottom cover plate for
the NC57, NC57B and NC57M. Looks like a factory manufacture, not a
homebrew. It even has the stains where the 2 little product labels
were. The little cover plate for the alignment holes is gone, the cover
plate fairies got that one. I don't know what to ask for it, so I will
accept offers for a week and then let the buyer with the best offer
know that he/she has won. Figure $5.00 for shipping in the continental
U.S. It just goes to show that not EVERYTHING goes directly to eBay.
rgds,
Mark S.