Before I continue, below are links showing hundreds of examples of forged Mickey Mantle baseballs, photos, etc. found on Ebay (the most dangerous place to buy autographs if you're a casual collector or impulse buyer).

https://live.autographmagazine.com/forum/topics/ebay-mantle-dimaggi...

https://live.autographmagazine.com/forum/topics/examples-of-mickey-...

https://live.autographmagazine.com/forum/topics/most-common-mantle-...

Here is that forged "500 Homerun Club" baseball listed by Ebay seller Draftday2.

https://www.ebay.com/itm/500-Home-Run-AUTOGRAPHED-baseball-Mickey-M...

Ebay seller Draftday2 writes the below about his experience as an autograph collector.

You may have to click on the below image to get a closer view.

These are simply obvious and laughable forgeries that we have observed hundreds of times.

What a waste of a William White baseball.