There were many different series and types of notes printed prior to 1928 by the Federal government, and values range from the very common 1923 $1 Silver Certificates (blue seals), worth from $10 to $100 depending on condition, to ultra-rarities that can be worth tens of thousands of dollars or more. After 1923, the U.S. Treasury reduced the size of the printed money it issued, so the bills printed from 1860 to 1923, including silver certificates, are highly collectible. The large-format notes were called house blankets, or horse blankets, and the last $1 silver certificate issued in that format can garner $20 to $40 depending upon the condition. Re: US $100 Silver Certificate Dollar They are definately worth more than face value. I sold a five dollar one for twenty dollars several years ago before I ever started collecting junk. Definately ebay them one at a time or sell them as one or a batch, whatever.