Answer:
Assuming the coin is circulated, the 1890-O Morgan dollar is a common New Orleans Mint coin. For an accurate assessment of value the coin needs to be seen and graded. Most coins show a lot of wear. In general retail values for low grade coins are $19.00-$21.00, better grade are $22.00-$23.00 and coins showing almost no wear run from $24.00-$32.00. Values are a market average and only for coins in collectible condition, coins that are bent, corroded, scratched, used as jewelery or have been cleaned have far less value if any to a collector or dealer