1949 Chinese Yuan Bank Note

hchcoin

My mother in law just gave me 6 of these notes and I looked them up online and they potentially seem to be valuable but I don't know much about currency especially Chinese notes from 1949. My guess is they are not worth much but wanted to check. In doing some research, I noticed these notes come with or without a watermark but I can't find any information on how to know the difference. Any help on values and where to find the watermark would be appreciated. 5 of the 6 notes are in pretty good shape with minimal wear but they have all been lightly handled with a few creases on each one.

Thanks!

hchcoin

Oops, wrong forum