Oldsmobile ‘Rocket’ sign, $6,050, Matthews Auctions Gavels ‘n’ Paddles Recent Auction Results From Near & Far By Ken Hall A rare Oldsmobile double-sided porcelain “Rocket” sign, the one that hung under the regular Oldsmobile sign to advertise the auto maker’s “rocket” engines, sold for $6,050 at an auction held Nov. 23-25 by Matthews Auctions, LLC, […]