1991 topps glow back

[Slinger]

I have the same exact curiosities.

Hoping someone that collects these has some insight.

[bnorth]

I will say I have seen people telling some very interesting stories on eBay selling(or at least trying) these glow back cards at huge premiums.

[ALR-bishop]

Contact the posters Zach Wheat and SteveB, but be careful, judging by this thread they may be contagious

http://www.net54baseball.com/showthr...ght=Topps+1991

http://net54baseball.com/showthread....991+vatiations

[steve B]

The ones in your pics that are bright orange are the ones.

As far as I know there shouldn't be any value difference. I'd have to look again to be sure, but the box I opened a while back has both types of backs in the same box, and in the same packs.
There are some that react to UV oddly, more of a dark ruby red than anything, but it takes a strong UV source at the right wavelength to spot them. Those seemed to be tougher, but my sample size was only around 4-5000 cards, so a different batch might have a lot more of them.

They're fun, as long as the UV doesn't give you headaches and/or eye damage. I got a bit of a headache after a couple hours. It went away pretty quickly.
I can't really see paying a premium for them, maybe a slight one if I was a player collector who didn't want to search through a bunch of the same card.

[jacksoncoupage]

There are very variations to the UV coating placement. Just borders vs. borders and stat area. I don't recall all the different combinations but some are definitely in shorter supply than others.

Like Steve B said, I have found both types in the same box. My sample size was roughly 8 3200/5000ct boxes and a dozen or so wax, jumbo and rack boxes as well as a few factory sets (they are all glow versions in the xmas set). This is just what I picked up when they were discovered/gaining traction two years ago or so. Across the board, I saw fewer non-glow backs than glow, estimate about 30-40% non glow.

One of the rarest varieties I have found is a non-glow back with a yellowish cardstock (when under the UV lamp).

[JoeDfan]

Really?!?!?!?
Now I have to go back and look for yellow paper under the U/V light?!?!?!?!??

Every time I think I'm out, 1991 Topps pulls me back in!!!!!!!!!!

[steve B]

So I probably shouldn't mention that this happened other years?

The difference isn't as noticeable, but they do have reacting/non-reacting backs for other years.

[Zach Wheat]

Originally Posted by jacksoncoupage

There are very variations to the UV coating placement. Just borders vs. borders and stat area. I don't recall all the different combinations but some are definitely in shorter supply than others.

Like Steve B said, I have found both types in the same box. My sample size was roughly 8 3200/5000ct boxes and a dozen or so wax, jumbo and rack boxes as well as a few factory sets (they are all glow versions in the xmas set). This is just what I picked up when they were discovered/gaining traction two years ago or so. Across the board, I saw fewer non-glow backs than glow, estimate about 30-40% non glow.

One of the rarest varieties I have found is a non-glow back with a yellowish cardstock (when under the UV lamp).

I believe the glow backs are related to specific sheet something was printed on....and therefore you may find a mix of glow backs and non-glow backs in the same box. However, you wouldn't find cards from the same sheet with and without glow backs.