Joseph Tavares has the right idea, but I'm not sure there would be a way to tell as the vendors don't have a "set stock" they bring each month. Just make a day or two of it and go browse around. I would recommend the back portion of the building on the upper part of the road.... North building I believe. That one has more stuff like that, the other bldg is more furniture and nicknacks but may have models too. Happy hunting!
You might want to call the promoters of the antique show to find out as there are dozens of different antiques.
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