Are old five dollar bills with the small portrait worth anything?

The value of an "old" five-dollar bill will vary with the age and condition. If you got this bill out of circulation, it's almost certainly only worth five dollars. The "average" life span of a paper note is only a couple of years or so (with higher values having a bit longer life). A lot of would-be collectors hit eBay, and they check to see what's for sale there and what is being asked or bid for it.

The Lincoln $5.00 bill 1923. If the picture is in a round porthole. I have seen collectors asking upwards of a thousand dollars for a uncirculated note in Fine condition