Are silver dollars coined in the 19th century valuable?

Yes. These coins were 90% silver so at today's prices they're worth a minimum of $14-15 just as scrap metal.

But before you go dumping them at the nearest "we buy old coins" shop, you need to know whether they're worth more as collectibles. That involves answering specific questions related to the coins' dates, what mint mark they have (if any) and how worn they are.

For example, the most common 19th-century silver dollar is the famous Morgan design, considered to be one of the greatest U.S. coins ever made. It was struck from 1878 to 1904 and then again briefly in 1921. Many date/mint mark combinations are still pretty common and are worth in the $15-20 range, but there are others that are quite rare and sell for thousands. So, it's really important to check on your coins' specific values before doing anything with them.