u/Technical-Paint3179

Trying to learn how to grade coins better

I was working in my yard this morning and came across these amazing specimens. They look like they may have been tossed aside by an old timer, or maybe they were dropped by an inebriated collector. Alternatively, they may have been buried by early prospectors and uncovered by natural processes. For reference, these were found in Central California. I don't have a scale, but they don't feel particularly heavy. Any idea what they're worth? Please let me know if you need a close-up of any of them. Front and back appear to be the same. Thanks in advance.

Uniface banknote featuring John Calhoun and Thomas Jefferson printed in the early 1860s