Help Needed: PSA Timeline

[The-Cardfather]

I seem to remember that some months ago, someone posted a comprehensive timeline with corresponding certification numbers of all the different types of PSA slabs & labels since the company's inception.

I just spent 30 minutes searching for it, with no luck.

Can anyone help?

[Peter_Spaeth]

https://forums.collectors.com/discussion/846031/for-reference-the-history-of-the-psa-flip-label-twileys-archived-thread

[bobbyw8469]

That should be earmarked...it's a great review.

[swarmee]

http://www.net54baseball.com/showthread.php?t=260354&highlight=flip