1970 Kellogg set

[MCoxon]

Real beauties, Ron.

I read somewhere that most years the Kellogg's cards (maybe all but 1971) could be acquired in cereal boxes or other sources - like the packs Ron shows.

I wonder if there's a difference in how the cards fare if they were mixed in with cereal during the packaging/distribution/retail process and those cards that were not...

is there a way to tell if a card was inserted into a box or acquired differently (like perforated vs. hand-cut for Post)?

That's a good question, later Kelloggs mail in @ 1980 they came 3 or 4 to a strip perforated, I would have to check my sets, as far hand cuts to my knowledge do not apply to Kelloggs if that's what you meant

[David W]

1970 Kelloggs hand cut proofs and sealed bag.

[steve B]

The company that owned the process also made postcards and some larger souvenir type items. I have a few and even the big ones are still Ok.

So far the Sportflics and another mid 90's 3d set are also fine.

Most of the Kelloggs I have are ok too.

But some licensed 3d postcards I have came very curled, and probably can't be straightened.

I believe the problem is the plastic shrinking a bit while the paper on the back doesn't. Humidity would make that worse since the paper might expand. Some plastics shrink as the plasticizer dries out of them. Sunlight and heat would make that worse too, so 3d stuff stored since new would probably be decent, ones trucked to a flea market for a couple years probably not.

The late 70's set I got through the mail came in four card panels. They didn't curl, but did separate a bit. I'll have to check and see if the ones from inside the boxes are different.

Steve B

[ALR-bishop]

Some years back Kodak offered disposable 3D cameras. They had 3 lenses and in the right circumstance turned out some cool pictures . The pictures were thick and had a plastic feel to them. I think basically each picture involved three pictures superimposed on each other. I took a bunch of them on trips, but they have not held up well over time. Here is an example, although the 3D effect does not show up as well in a scan

[Econteachert205]

I thought the curling was similar to why artists primed both sides of old wood panels for oil painting, that if one side was left untreated, it would lead to curling.

[ALR-bishop]

Compliments of another board member