Well, I was really hoping that you fell into a great deal where the person did not know what they were selling and was selling them cheap! I still hold out hope for you that you did not get taken but I fear the worst! I say this because of what the others have noticed and that is the similar wear and the dirt/discoloration patterns on most of them but when I saw that you received one or more 1889-CC Morgans in the bunch, I said to myself, no way. Nobody sells one or more "King of the Morgan Silver Dollars" for $19 a piece, let alone the other "CC" Morgans you purchased in the deal. You need to have them checked out by someone who really knows their stuff (probably a longtime, knowledgeable and experienced Coin Dealer at a Coin Shop), not someone at a Pawn Shop that occasionally buys Silver coins for their' Silver content. If the coins are in fact or even some of them, contact Law Enforcement right from the Coin Shop, have them come in and take a report and you set up a sting operation on this guy, if he hasn't already left town. Folks that sell the Chinese counterfeits may only come to town with light luggage and a Laptop, stay in a cheap Motel, create an Ad on Craigslist, meet with an unsuspecting Buyer, sell the coins, check out of the Motel and move to the next town. Again, I hope that they are genuine but if not, I hope that Law Enforcement can nab the guy! You could contact the Secret Service but once the Law Enforcement Agency who has jurisdiction (Police, Sheriff's Office or Constable), will more than likely contact them as soon as they right up the Report.
Frank
Added: If in the future, you make similar purchases from folks off of Craigslist, follow these simple rules: Meet in a public place with a lot of people around and hopefully one that has cameras for security. Arrive early so that you can see what the Seller is driving and try to take someone along with you, that can sit elsewhere to observe and be your safety net. Note the make, model, color and year of the vehicle that the Seller arrives or leaves in and take down the License Plate number. Ask the person's name and ask to see their' ID to insure it matches and to see where they are from. If from out of State, then that is an automatic Red Flag and one which should end any deal right then. Always take Silver and Gold testing kits, take a weighing scale that accurately measures in grams and take a copy of the Redbook on U.S. Coins to reference what the coins should weigh as they came from the Mints. Of course, you will have to allow for wear but unless a Morgan is completely slick, it generally should not weigh more than .50 of gram or so under the weight of a normal Morgan Dollar as it came from the Mint and most times, not more than .30 of a gram off.
? maybe some brass mix?
