Dan Morphy of Morphy Auctions, Denver, Pennsylvania, conducts bidding for items at a two-day coin-op and advertising auction in Las Vegas on Saturday, Oct. 20, 2018. (Richard N. Velotta/Las Vegas …

Dan Morphy of Morphy Auctions, Denver, Pennsylvania, conducts bidding for items at a two-day coin-op and advertising auction in Las Vegas on Saturday, Oct. 20, 2018. (Richard N. Velotta/Las Vegas Review-Journal @RickVelotta)