Frank is the name of the Bidders Asst.,(Not the Name of the Buyer),who helped get that Bid.
The auctioneer mentions the name of each Bidders Asst. and the end of a sale so the paperwork people know where to go to get the signature.In this case,Danas son,Frank Mecum.
https://journal.classiccars.com/2019...auction-block/