If you want to use silver coins, this is a great and affordable option, the half dollar coins from 1965 to 1969 were made with silver outside and copper inside, these are called Low Silver Coins.
TUC is the best coin ever, Mr. Tango won the Invention Award at FISM 2012 for inventing this coin that replace the expanded shells, double side coins, magnetic, flipper coins and many more, the limit for a TUC is your imagination.
Perform coin across, 3 fly coin, coin thru table, coins to glass and many more. Besides you get access to Tangopedia, a video gallery with 30 effect's tutorial and hundreds coin magic effects everything explained by Mr. Tango and his friends.