If it's a Morgan Mint copy, then it's gold plated at best -- no collector value -- maybe a couple dollars novelty value.
12.50 grams for a silver half dollar
1 oz
How many dollar's in 30.000 nickels
22 lbs
The current weight is about 12.5 grams. The current melt value is a $11.23 as of 11/11.
The weight tolerance is +or- 1.5 grains
A Morgan Silver dollar is 38.1 mm in diameter and 26.7 gm in weight.
An unworn Morgan dollar has a nominal weight of 26.7 grams. All Morgan dollars (as well as Peace dollars) were struck in an alloy of 90% silver and 10% copper, so they contain about 24.1 gm of pure silver, or about 0.77 troy ounces.
26.73 grams.
The weight standard for all Morgan dollars is 26.73 grams
The standard weight of all Morgan and Peace dollars is 26.73 gm.
A Morgan silver dollar is a large dollar coin, on the front there should be a depiction of Lady Liberty's face wearing a small crown saying "LIBERTY" on it the reverse features an eagle with olive branches and arrows and a wreath at the bottom. They were dated 1878 to 1904 and also made in 1921. The only other coin that could be easily confused with a Morgan dollar is a Peace Dollar of which some were also minted in 1921, they have the same size, but the liberty on a Peace dollar looks like there are rays coming out of her head and the reverse of a Peace dollar has an eagle perched on a rock engraved PEACE.
The ASW (Actual Silver Weight) of the coin is .77344oz of pure silver. All Morgan an Peace dollars have this amount of silver.
1888 makes it a Morgan silver dollar, which has a weight of 26.73 grams and a diameter of 38.1 mm. A heavily worn specimen might weigh slightly less.
An 1891 dollar coin is a Morgan dollar, and therefore should weigh 26.73 grams. (This is the official weight when issued from the mint. If the coin was substantially circulated, it may weigh less due to wear.)
== == There is NO gold in a Morgan dollar. They are all large coins, 38.1 mm in diameter, and made of 90% silver and 10% copper as were all silver coins up till 1964. If the coin you have in question is truly an 1890 gold dollar it will be smaller than a dime and the specie weight value will be around $50.00. The coin must be seen to be properly appraised. As noted above the Morgan Dollar is a Silver Coin and not a gold piece.
Assuming the coins are in mint condition, they don't. PCGS shows the nominal weight for both Morgan and Peace dollars as 26.73 gm.