If you see a coin for sale and the adv., says ONE POUND SILVER COIN and shows a picture of the front and none of the back and the date on the coin is 1878 with a Morgan Head you can just about be certain it is a fake. Clad silver usually over copper. Not worth the cost of the mailing. If you note carefully most sellers of this coin will not refer to it as PURE SILVER or .999% pure silver, etc. Instead they says things like One Pound Silver Coin, or Silver Coin. If a picture is shown of the back and all you see is ONE POUND or ONE POUND TROY or ONE TROY POUND but no where on the coin does it says FINE SILVER or .999% PURE SILVER. Run don't walk to the nearest exit.
I can't think of one mint public or private that doesn't disclose the purity of the silver and or gold in their coins. Unless the coin is for distribution at face value for payment of debts. All bullions bars, coins, bank notes, etc., which are minted as a means of saving silver and gold are almost without a doubt labeled as to the content of the coin. So when buying any silver or gold item look for it to state what it contains. While this isn't 100% sure to protect you from a fake it will almost certainly limit your risk to an acceptable level.
One trick I've noticed lately is showing you ONLY the face of the coin and not the back. NEVER buy any coin that doesn't show both sides. You need to see .999% pure silver on one of the sides if its not there do not buy it. I mean NEVER buy it as it is almost certainly a clad coin worth at best what you might pay for a paper weight of lead. Not even worth the shipping charges.
If this is helpful to you please rate it yes or no. Thanks and be careful buying gold and silver. Read all the remarks made when the word CLAD is used move on. If the word isn't used look for the proof. The proof is in the .999% pure. If they don't tell you its .999% pure and they tell you its CLAD then you have no recourse to get your money back, poof its gone for good.