Odd Probstein 1971 Oscar Robertson card - sticker variation?

mcolney1

https://www.ebay.com/itm/363728228455?hash=item54afe45067:g:YOUAAOSw8fliCrGg&LH_Auction=1

Of course, no mention of sticker? in item description. Is it on the card or case? Guessing case as no notation from PSA. Guessing sticker came from the sticker cards in the set. Might have been cool if it was aligned with printed background.

For reference - this is how the card should look

Ironmanfan

looks like they missed that one

IMF

Nathaniel1960

It’s not unlike the 1969 Topps Hockey set where you could apply the stamp to the back.