Sitting at a coffee table near the back of High Country Furniture and Design’s Waynesville showroom, Jake Ballard buzzed with energy.

For collectors of advertising memorabilia, Antique Crossroads is a veritable museum of commercial art. Tin signs promoting products that no longer exist hang alongside vintage calendars featuring ...

Is the deal too good to be true, or are you simply getting what you paid for? Here are the nitty gritty details to be aware of.