Willie mays authentication
 

So I've been noticing a lot of these Willie mays holo stickers on items. Now
I know it's been around for a good while. But I've seen a recent burst on all types of memorabilia. My question is how likely can it be that someone got
The stickers and are pumping out theses fakes.

I recently seen a lot of the catch photos selling on
The cheap but when you read the feedback on the sellers it doesn't look good.

Anybody have any info on how trust worthy these items are?