Early 1980s Kelloggs Baseball Card Sets How Do You Separate the Crds?

[insidethewrapper]

Don't be to disappointed when you send in the Kellogg's and don't get the grade you think they should get. Also when I have got a 9 or 10, when I review them later in my collection, some have obtained cracks after they have been slabbed. I have stopped collecting Kellogg's for this reason. I hate to piece together a high grade set( pay big $$$) and then years later have to replace many of them. The 1975 Set is the worst, also a lot of my 1971's have cracked after being put into PSA slabs. Hope you have better luck.
Any others with similiar results ? How about other years ?

[steve B]

I haven't slabbed any.

A lot of the cracking is from the plastic losing some plasticizer over time and shrinking while the paper doesn't shrink. Humidity can also make the paper expand, and if things are restrained in a holder I think cracking is probably almost inevitable.

Some of my factory sets curled enough in the original package that the panels separated into individual cards. None cracked, at least not by the last time I checked. Most of my loose cards have curled some. Oddly the earlier proofs are mostly flat and the plastic is still more flexible. I believe it's a different type of plastic.

Plastics are a "new" enough material and there are so many specific formulations both in production and processing that even professional conservators in museums are often puzzled about how to go about preventing it from damaging itself.