How to get inton the numismatic business?
You can buy from each mayor central bank of almost any country uncirculated proof coins, but they are very expensive, if you are trying to grow a business you must contact several numismatic shops and catch the best offers, most of their coins are not really uncirculated except the rare ones. Besides is a long time business, I mean you buy now and sell in 10 years, that’s how you can make more money. Buy gold coins they always keep increasing their value. Try to buy some rare coins from the central banks and sell them few years later at least for double or triple value.