To me, a Brass Hat car implies it was a Zone order or some sort of company vehicle. I can't quite make out the city and state of the selling dealer, but man, if you're asking a premium price based on the 'GM Exec Ordered' claim, I'd want to see more of an effort putting the story together for the auction.
Pretty sharp color combo with the turquoise interior, nonetheless. Wish it were a 4-speed!
Link to 1966 Impala 427 auction
168676S222279