1989 Upper Deck Factory sets

[Klrdds]

With the increase in the value of the Ken Griffey Jr rookie card in this set i was wondering about the sealed factory sets. I purchased 4 factory sets from my local card shop in 1989 when they were released and they were sealed with only a round clear cellophane sticker about 1 inch - 1 1/2 inches in diameter 1/2 way along the flap side of the box/set. In fact all the factory sets that I saw for that set were sealed that way at my local card shop and even at other card shops and at card shows as well. I recall being told at a card show by a representative that this seal was extra strong so that if removed part of the box labeling would be removed/torn also so that a buyer would be able to see that the set had been opened. Now I am seeing these sets for sale/auction sealed with a cellophane / plastic "shrink " wrap w/ no round seal mentioned or visible.
Was this factory set sealed in different ways from the factory :
1. with the round cellophane seal only
2. shrink wrapped only
and /or
3. shrink wrapped and with the round cellophane seal ?
Or have these shrink wrapped sets been opened looked at and then re-wrapped ?
Thanks