I assume what you meant to ask is how much is lost due to circulation, etc? If so, it's fairly minimal and no one is likely to cut you a deal due to lost weight; that's now how they're generally sold.
No I was trying to see how much silver content was in them so I know what would be my best buy in price.
You will struggle to find anyone selling any kind of morgan short of massive damage for melt. May have better luck with peace dollars but generally not
Heres a silver calculator for 90 & 40% US silver http://www.coinflation.com/coins/silver_coin_calculator.html
Well their a local pawnshop that'd got a box of Morgan's and peace dollars for $15 a peace culled coins.
Please don't take this wrong, but google is our friend. Oftentimes, and especially with fairly straightforward questions, one can easily locate answers on their own, which is certainly handy when/if you don't have the time to post to the forum or wait for replies. Just a friendly suggestion. As baseball said, expecting to buy dollars at straight melt in any type of retail setting is, unfortunately, likely to be an exercise in futility. Dollars in particular have, and long have sold at premiums above and beyond their silver content, even culls, damaged, cleaned, etc and so on (with a few exceptions). Being as you're a new collector, I cannot stress enough that focusing on price, or getting a "deal" will likely cause more harm than good. It's not that deals can't be found - they, of course, can - but it's much easier to walk into a sucker's bet, especially for those less than knowledgeable about what they're buying.
This, if true, would represent only a fairly tiny premium, but you need to know what you're buying and be confident you can identify genuine examples, even when buying as culls or scrap.
That's good if true, but the point still stands. It's great to have a trustworthy source, but YOU need to know what you're buying. Good luck.
Which is what points to something being wrong. At least take along a magnet and see if any of them are iron/plated iron. Also would be a good idea to take a cell phone pic of them in the store and then weigh them and if any of them are REALLY light, you could bounce them back on him.
Here's a link to give you the value of the silver, based on what the price of spot is at that time, by coin type. http://www.silverrecyclers.com/Calculators/coin_calculator.aspx