1989 Upper Deck Baseball Pack question... UPDATE w/PHOTO

I have 22 random packs from an auction purchase...
On the back of 5 of them are the letters R.H. on the "flaps"...
Can someone tell me what this stands for and why they are on only five out of the 22?
thanks...
[URL=http://s261.photobucket.com/user/swartz1/media/IMG_2973_zps85219cea.jpg.html]
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On the back of 5 of them are the letters R.H. on the "flaps"...
Can someone tell me what this stands for and why they are on only five out of the 22?
thanks...
[URL=http://s261.photobucket.com/user/swartz1/media/IMG_2973_zps85219cea.jpg.html]

Looking for 1970 MLB Photostamps
- uncut
Positive Transactions - tennesseebanker, Ahmanfan, Donruss, Colebear, CDsNuts, rbdjr1, Downtown1974, yankeeno7, drewsef, mnolan, mrbud60, msassin, RipublicaninMass, AkbarClone, rustywilly, lsutigers1973, julen23 and nam812, plus many others...
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Currently collecting 1934 Butterfinger, 1969 Nabisco, 1991 Topps Desert Shield (in PSA 9 or 10), and 1990 Donruss Learning Series (in PSA 10).
Looking for 1970 MLB Photostamps
- uncut
Positive Transactions - tennesseebanker, Ahmanfan, Donruss, Colebear, CDsNuts, rbdjr1, Downtown1974, yankeeno7, drewsef, mnolan, mrbud60, msassin, RipublicaninMass, AkbarClone, rustywilly, lsutigers1973, julen23 and nam812, plus many others...
Looking for 1970 MLB Photostamps
- uncut
Positive Transactions - tennesseebanker, Ahmanfan, Donruss, Colebear, CDsNuts, rbdjr1, Downtown1974, yankeeno7, drewsef, mnolan, mrbud60, msassin, RipublicaninMass, AkbarClone, rustywilly, lsutigers1973, julen23 and nam812, plus many others...
http://www.baseballcardpedia.com/index.php/2007_Upper_Deck
http://www.sportlots.com/Baseball/card_values/2007-Upper-Deck-1989-Reprints.tpl
Currently collecting 1934 Butterfinger, 1969 Nabisco, 1991 Topps Desert Shield (in PSA 9 or 10), and 1990 Donruss Learning Series (in PSA 10).
<< <i>From the information I mentioned above; maybe these sites will be of some use. I do believe this is what I was referring to.
http://www.baseballcardpedia.com/index.php/2007_Upper_Deck
http://www.sportlots.com/Baseball/card_values/2007-Upper-Deck-1989-Reprints.tpl >>
Those 2007 Rogers Hornsby cards wouldn't have come in 1989 packs though.
Currently collecting 1934 Butterfinger, 1969 Nabisco, 1991 Topps Desert Shield (in PSA 9 or 10), and 1990 Donruss Learning Series (in PSA 10).
<< <i>I believe they are from the retail hobby boxes sold at Walmart. The other packs are from hobby packs sold to dealers only. >>
Sounds logical but I don't recall any UD hobby boxes in 89. Sam's wholesale had some cases but these very seldom hit the floor. This product was one of the hottest at the time.
Thanks,
David (LD_Ferg)
1985 Topps Football (starting in psa 8) - #9 - started 05/21/06
WTB: 2001 Leaf Rookies & Stars Longevity: Ryan Jensen #/25
Looking for 1970 MLB Photostamps
- uncut
Positive Transactions - tennesseebanker, Ahmanfan, Donruss, Colebear, CDsNuts, rbdjr1, Downtown1974, yankeeno7, drewsef, mnolan, mrbud60, msassin, RipublicaninMass, AkbarClone, rustywilly, lsutigers1973, julen23 and nam812, plus many others...
And.. I just got pennied. Why does it change?