Coin Collectors Guide

I have 85 lbs of old coins not in any catalog or protection. My grandmother left them to me and I do not know how to value them even with the books I have bought about coin collecting. How can I find someone that is trustworthy to look and value these coins for me? The [...]

I’m doing a chemistry assignment and I have to design a coin. Can anyone tell me if the manufacturing of the coin will cost less than the face value? Share and Enjoy:

For school, we have to design a coin that uses materials with certain properties. My group thought of plastic/aluminum coins. I want to know how long this tpye of coin would last in general circulation and what will happen after it is removed. I need to know how much it costs to obtain these materials [...]