Was able to land a really nice PSA 9 1972 Topps #607 Frank Duffy 'yellow letter' variation (card on the right), and realized there seems to generally be three, not two, versions of the card.

The one on left is the full green version, but between it and the 'fully' yellow version, there is a bit of a hybrid example, where the letter bottom green is lighter, but intact, and the upper green portions on the inside of the letters are almost completely gone...

Attachment 593061

I assume this is due to a 'weakening' of the cyan ink, because you can see how (most notably) the sky moves from dark blue to much lighter blue across the three versions.

Green/red upper lip...not sure what he ate before the photo shoot.

1959 #514 Gibson
 

This one is eerily similar to the 1957's.

1957 Back Errors
 

Here are four really wild overprinted backs from one of my favorite sets.

1957 Backs
 

Here are four missing ink card backs to rival the Bakep one. I never understand why Bakep commands such interest and high prices. There were all commons less than $10, except maybe Ford.

1965 Topps Wilbur woods 478
 

Back leak? I just found another on eBay so I guess reoccurring?

https://img.comc.com/i/Baseball/1969...inal&side=back
1969 Topps - [Base] #582.1 - High # - 7th Series (Tony Oliva) (White Circle on Back)
Courtesy of COMC.com

Line break in the circle containing the card number. Recurring print defect.

'61 Post Red.

Extreme difference in quality and color with this card. No premium for either.

You can get a perfect registration Blue bgrnd.

Or a gray slightly out of focus one. https://uploads.tapatalk-cdn.com/202...ca3e2caf85.jpghttps://uploads.tapatalk-cdn.com/202...001eede91e.jpg

The Bakep like the Herrer just got early hobby recognition before eBay and seller/dealer scans showed how many cards have similar scarce recurring defects. Ongoing recognition by grading companies make them must have’s for master collectors.

For a time Lemke included some border break cards in the SCD Catalog as variations until it became obvious that such defects were commonplace

A bigger mystery to me was PSA’s much more recent recognition of the 61 Fairly with the green smudge in the baseball on the back, a defect that shows up on several other 61 cards

Someone needs to be appointed The Hobby Commissioner of Variations to get control of these things. I nominate you Thomas :)

I've given up on them all, but most 1961 Posts can be found with this like with widely varying color differences in the images that seem to relate to different productions and not just differing levels of ink at the moment a particular sheet was ran.