St. Charles machinists hall auditorium on St. Charles Rock Rd. and 270. They had it there a couple times a few years ago (before Belleville). The down side is that it's an evening auction on a Tuesday and some people work the next morning. It wasn't too bad the last time it was there-had great prices on soda vending machines-IIRC around $75 for them working-but awfully big and heavy ones. I'll be there.