Your Harley-Davidson mini 50 is somewhat collectable these days. It was made for H-D by Aermacchi of Italy. If you'll simply 'do a Google' on "Aermacchi", you'll find hundreds of links to clubs, message boards and enthusiasts for these Italian Harley-Davidsons. As far as value, search for "Aermacchi" in ebay, and track the selling prices of bikes similar to yours.
Better than the inane answer offering to rip your head off, eh?
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