Working on a PCGS slabbed type set. I have a long list, including 1999-W $5 gold Washington 2016-W $5 gold Park Service TRoosevelt 1883 Hawaii quarter/half MS64 1947-S Philippines Peso MacArthur
Scotsman is the big name in town. But I've never been in their shop. They do auctions as well, so I'm not sure how much of the "good stuff" is available on display. Too bad you can't time your trip a few days later. There are at least 3 big (over 100 dealer) shows per year in the St. Louis area and one of them starts on July 27th. https://www.missourinumismaticsociety.org/annual-coin-show They are pretty good shows. Especially the July and November ones at this convention center in St. Charles.