Confusion with Type Photos on PSA Site

[Jersey City Giants]

Type I - A 1st generation photograph, developed from the original negative, during the period (within approximately two years of when the picture was taken).
Type II - A photograph, developed from the original negative, during the period (more than approximately two years after the picture was taken).
Type III - A 2nd generation photograph, developed from a duplicate negative or wire transmission, during the period (within approximately two years of when the picture was taken).
Type IV - A 2nd generation photograph (or 3rd or later generation), developed from a duplicate negative or wire transmission, during a later period (more than approximately two years after the picture was taken)

Assuming the above is accurate how is the Ruth photo they show on PSA's site a Type IV and not a Type III????

https://www.psacard.com/services/ori...uthentication/


Ruth does not get to the Yankees until December 26 of 1919. Lets' Crazily assume they shot this the day he was signed. That means the photo would be have to be dated after December 26 2021 to be considered a Type IV...Correct??? also, how do they know it was made from a Duplicate negative??

Just trying to educate myself.

Happy Collecting,
Jason