Global Authentics Timeline

[VintageGamerN00b]

Hey Guys,

First time posting in the auto forum. PLEASE DON'T BITE MY HEAD OFF. I've been poring over these threads and am really impressed with all of your guys' expertise. Wish I would've found this before being taken on a 500 HR ball.

I'm wondering if anyone has a timeline of when authenticators with good reputations like Bushing and Knoll, and more controversially Steve Sipe, worked for GAI. I wonder if there's a way to date the GAI stickers to periods in time when they were apparently doing better work than others. (For the record, you guys have scared me off of autograph collecting for a while, and I would probably never pay for a GAI piece that wasn't perfect, but the researcher in me is interested.)

There's a guy in Orange County selling clearly counterfeit stuff with GAI stickers, and there are eBay listings popping up all the time, like this (that sticker was probably taken from another item anyways):

http://www.ebay.com/itm/MICKEY-MANTL...-/400481936986



Any thoughts?