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Trade cards of this type are a single piece that employ one or more folding parts to produce a change in the card's image.

This term is used in science and elsewhere to denote a change and, by rights, should also be applied to mechanical, heat-sensitive, and hold-to-light trade cards. Current usage, however, limits the term to only the above definition.

This type is frequently used in before and after trade cards. However, metamorphic trade cards that don't show the effect of using the advertised product, such as risque metamorphics, do not fall into the before and after cards category.


Some examples are shown here at 25 percent of actual size. Click on a card for a larger view and a description that includes the price it brought at auction (without buyer's premium).