I have spent enough time staring at PSA labels... That got me thinking about what changes have been made over time and how have they looked from the beginning in 1991 to today. There were a couple good forum threads on this topic already, so I used those as referenced sources and made up the difference myself.
The purpose of this guide is to show the historic changes of the labels, identify what an authentic label looks like and to help identify the approximate date of when a card was graded.
My compiled guide is linked below. If you have any comments, deletions, additions, etc. please let me know.
https://www.dropbox.com/s/hbhcm18nj2...Label.pdf?dl=0