That depends on its mint mark and condition. Anything other than a CC (Carson City) mint mark with be worth its metal value if well worn, i.e. numismatic G to VG condition. Higher than that, the coin would have more value as a collector piece than for melting.
OTOH, if it is a CC-mint coin, its rarity makes its numismatic value many times higher than its metal value. See the prices at http://www.numismedia.com/fmv/prices/mordlr/pricesgd.shtml , for instance.
My own feeling is that unless the coin is a cull (really, really worn to the point where you can barely make out the design and date) I would be very reluctant to sell it for scrap metal. The Morgan design is one of the most classic images to appear on an American coin, and as the saying goes, they ain't makin' any more of 'em.
The metal content of a 1980 silver dollar is 90% silver and 10% copper. That compisition is the same for all dimes, quarters and dollar coins up till 1964 when the compistion changed again to 90% copper and 10& nickel.
value of an 1890 E Pluribus umun silver dollar
above the DO in dollar on the back :]
One Dollar. Also, a 1890 penny is one cent, a dine is ten cents, and if you can't figure out the rest, I recommend trying not to move out of your mother's yet.
An 1890 Morgan dollar is very common, circulated coins are $30.00-$37.00.
1890 is a common date Morgan and is not rare or scarce.
As of 09/2009 the melt value of a Morgan dollar is about $8 to $10. However its collector value can be much higher depending on its condition and mint mark.
i will buy it for 5.00
79dollars
If it has one, it's on the reverse above the DO in DOLLAR.
42cents
These bills were redeemable for silver but were actually Treasury Notes rather than silver certificates. Please see the question "What is the value of an 1890 US 5 dollar bill?" for more information.