Ty Product Tags
Almost all Ty products have a swing tag (also known as a hang tag or heart tag) attached to their ear, body or other appendage with a plastic connector. There are different styles of swing tags for each Ty product family with some of the families spanning multiple generations of tags.
When a collector refers to the "generation" of a Ty collectible, it is actually a reference to the generation of the attached swing tag. A logical assumption is that (in most cases) the earlier the generation of the swing tag within a family of products; the older (and probably more valuable) the collectible.
The logic for determining the specific generation of a swing tag can differ from expert to expert and reference publication to publication.
Ty plush products also have a cloth tush tag sewn into a seam, normally on their rear end. As with swing tags, there are different generations of tush tags.
Beanie Babies 2.0 tags
Beanie Boppers tags
Jingle Beanies tags
Teenie Beanie Babies tags (McDonalds)
Teenie Beanie Boos tags (McDonalds)