Induction Spark Coil, Marconi, Tesla, Spark Gap Radio, Working Great $192.50 USD Sold on: 2013-Aug-06 Marketplace: eBay 6 Treasure 0 Trash 100% Detail: If you collect or restore old radios, crystal sets, early scientific apparatus, vintage test equipment, military surplus, or other unique old technical items, keep me on your favorite seller list. I a... More Relevance Historical Items
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