I have started trying to id and list my cash coins. Not an easy task for someone that isn't good with Chinese.
I have them narrowed down, but need some help with a few of them.
Qianlong:
1.

Is this one KM#394 ? The writing correct as well as size but the reverse characters are much larger than the one pictured, and something isn't "right" about the overall look. Fake?
2.


Is this correct? https://en.numista.com/catalogue/pieces19755.html
3.


It looks like KM#407 (anyone know the difference between the 407.1 and .5 listed?) but only measures 23.97mm at its widest. KM#405?
4.


This one is Qianlong, but I can't find anything near the reverse. It is 25.5 mm.
Thanks for any help that anyone can give.