Coin dealers and jewelers do buy gold & silver coins.
Most likely yes. These coins are common and most often circulated. Since they are circulated they are only worth their silver content.
Peace silver dollars were circulated from 1921 to 1935.
If your silver dollar has scratches, dirt, or is dark colored it is circulated. If it has no scratches, is shiny, has no dirt, and looks new it is most likely uncirculated. Uncirculated silver dollars are worth more than circulated silver dollars. Many silver dollars are however circulated.
1925 is a common date for silver dollars and so circulated examples sell for about melt ($25-30 depending on wear). Expect to pay about $50-75 for an uncirculated specimen.
In circulated condition they are worth 3 to 90 dollars depending on the condition. If they are of a low circulated grade they are worth worth 115 to 660 dollars. In high uncirculated grade they are worth up to 4,490 dollars but it is extremely unlikely you get this much for it if you sell it.
A circulated 1878 Morgan silver dollar can be worth 32 to 156 dollars.
1923 Peace Dollars are so common circulated coins sell for $32.00-$37.00. The actual value depends on the grade of the coin.
Some banks do sell American Silver Eagles, but they do not hold and sell silver coins that are turned in.
Most common Morgan silver dollars are worth around 20 to 40 dollars in lower circulated condition. See the link below for a price guide and then you can see common Morgan silver dollars.
Circulated coins are 1 or 2 dollars uncirculated coins about 8 dollars
Ebay is a good idea for selling steel pennies. if you don't have good luck with Ebay. I would just keep it since even in average circulated they are only worth a few dollars.
No such coin exists. All 1923 dated silver dollars are Peace Dollars, the last Morgan Dollars were minted in 1921. It is a common date for Peace Dollars and worth about $25 in average circulated condition.