[jacksoncoupage]

Here is the best scan I could get of the three different (confirmed) 1991 Upper Deck hologram types.



The top card is the "1990 UD Baseball" hologram type. Behind the "Upper Deck" lettering is a pattern of baseballs.

The middle card is the "1990-91 UD Hockey" hologram type. Behind the "Upper Deck" lettering is a pattern of "90" and crossed hockey sticks.

The bottom card is the "1991 UD Baseball" hologram type. A consistent pattern of 1991 on the holo. This is the most common version and presumably the intended type.

It's possible that another hologram type exists. I remember an ebay seller years ago used to make pairs of the 1991 UD NFL cards and I seem to remember there being a distinct football holo type.

After sorting through 3 3200s of this product, I found just a small sampling of each "error" type with the majority being the appropriate 1991 type.

Another thing of interest is that I found a Jeff Bagwell (Hi #) that has the "1990 UD Baseball" hologram on it. I had previously been under the impression that this was corrected early on in the low series run but it obviously has affected the hi # cards. Whether or not the "1990-91 NHL" version is available on hi # cards remains to be seen.