I bought a bunch of coins (80 pieces) at once from a good collector. Many of them I know are replica's, fakes, copy's, restrikes, and even some small real silver world coins. I did the quick tests like the magnetic first, to weed out the weak so to speak. Then I checked the pinging sounds and try to pick out the ones I thought would be silver.
And ultimatly I used the side scratch / acid test to check and from all 80 of them around 10 tested positive (some of them which I thought but some suprised me).
Here are 4 coins who are definetly silver, I even did the gravity test hanging each coin in the water on a scale and then did the maths. They are all between 75%/90% silver give or take...
I would love to get some ideas of what they are? Because they cant be real (right?) or are the really good fake coins, restrikes or just a silver copy? Please let me know your thoughts

2/3 Thaler 1692 Friedrich III Brandenburg Prussia Germany = Real Silver - 18,5 Gram
Thaler 1559 Zurich Switserland = Real Silver - 26,2 Gram - Replica or Restrike (heavier then original restrike!?)
Thaler 1603 - Maximilian III Grand master of the Teutonic Order = Real Silver - 30,8 Gram
Thaler? 1696? Unknown? MONETA FRANCO ETC = Real Silver - 29.5 gram
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