cheap silver find

I was at a market and everything made of metal was priced for tourists. so then i spot a small pile of coins. the country i am in doesn't have coins so i thought i better look through them. i bought one french republuc coin from 1929. It just had the silver look to so i asked how much.. the answer was about $3.50 andi@m sure i could have talked them lower. after i left i did the flick test and it sounded right then looked it up on the internet to find i got 27 grams of .90 silver for 3.50. Now I'm going back for more... after a foot massage.