All true silver dollars from the 1840s to 1935 (not the copper-nickel or brass $1 coins made since 1971) have the same composition: they weigh a bit less than 27 grams when new, and are made of an alloy of 90% silver, 10% copper.
An 1879 "Silver Dollar" is a Morgan dollar.
1879 would make it a "Morgan" dollar.
The 1879 Morgan dollar has a diameter of 38.1mm, thickness is 2.4mm.
A U.S. silver dollar dated 1879 is a Morgan dollar. Assuming it is circulated and does not have a mintmark, values run from $25.00 to $40.00 depending on the condition of the coin.
The 1879 Morgan dollar is not scarce or rare, assuming it's circulated and has no mintmark, average retail values are $26.00 to $32.00 depending on how much wear the coin has.
The 1879 Morgan dollar with no mint mark is common. A circulated coin is worth $32.00-$39.00. Average Mint State coins are $42.00 to $55.00
The 1879 Morgan dollar is not scarce or rare, assuming it's circulated and has no mintmark, average retail values are $30.00 to $41.00 depending on how much wear the coin has.
The 1879 Morgan dollar with no mint mark is common. A circulated coin is worth $32.00-$39.00. Average Mint State coins are $42.00 to $55.00
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