Need Help Identifying a variation/error card

[wavescrashing]

I've recently gone through the process of trading and selling the rest of my basketball cards as I don't collect basketball much these days.
When trying to find a card I have in the online price guide became rather cumbersome, I was able to find examples of the same card on eBay.
Once I looked at some of those examples, I noticed one big difference. They all had a card number and text on the back of the card, where as mine does not.
I wasn't able to find any examples with the same design on the back as my card.
I pulled this at a Target years ago I believe.

Here's the card in question:
2005-06 Upperdeck LJ/MJ Bonus Pack Dual - Card # (that's supposed to be on the card) LJMJ10
There are gold variants #d/5 and silver variants #d/23. As you can see in the photos, mine isn't numbered.

Here's mine:





And here's an example of the "normal version"

Has anyone seen this semi-blank back version before?
Is it intended?
Do I just call it an error and move on?

Any help on IDing this would be very helpful.
Thanks,

Mike

[WilyWestbrook0]

Hmm, never seen one of those before. Wonder if it was a printing error or some kind of promo.

[wavescrashing]

Hmm, never seen one of those before. Wonder if it was a printing error or some kind of promo.

Maybe the former. It was pack pulled from a retail box at Target when these came out, so I wouldn't think a promo. I think I had pulled a regular version of another card in the same set out of a different retail box, but that one had the number and text on it.
I even tried searched for the 1/1 auto version to see if there would be a hint there (but why would the back have space for autographs???). Couldn't find any examples because that's a 1/1