One of the RAREST Lionel items EVER. Only 12 known.

Wanna see one of the RAREST Lionel items made? There is something DIFFERENT about THIS 3530 EMD Generator Car from 1956. Do you know what it is? What makes it one of only twelve known to exist? THAT difference makes it go from $85 to thousands. Check out the listing to see if you knew the answer!
 
Check out our auction for this item at Rare Lionel 3530
 
https://www.ebay.com/itm/203207612970