Lot of 3 Central Bank of China Banknotes: 1 1928 10 Yuan and2 1936 5 Yuan

Cleaning out my mother’s house and found my step father’s coin & money collection.  I am not an expert and am reporting what I see and info I have found online

The bills appear to be in excellent condition for their age.  I don’t see any tears or holes. The1928 has the appearance of being uncirculated. It is so clean with no folds or wrinkles.  I do see some puckering right in the center.  I also see one spot in the border on the side with the portrait. The two 1936’s are also very clean with no wrinkles, although I see a faint line on both of them where they might have been folded at some point intime.  The imagery in the 2 36’s is not exactly the same.  I think you can see that in the images.  Also, the ink color is a bit different.  A spot in the border on one of them.  And the one with the pagoda is printed crooked on the paper. The border is uneven.

 Each one looks to have been folded in half at some point in time. They are fairly clean and crisp.  From what I could find on the internet, it looks like they are dated 1966?