This article is from the Toys FAQ, by firstname.lastname@example.org (Scott Gordon) with numerous contributions by others.
When Toy Biz realized that it was a mistake to release only
half of the FF in the first assortment, they hastily produced
Human Torch and Invisible Woman "interim" figures. The "interim"
Human Torch is different from the second assortment Torch in that
it is actually a repainted FF Silver Surfer figure with "Glow-in-
the-dark-flames" and a TB Catapult Launcher whereas the second
Torch is a newly molded figure with Sparking-Action. Similarly,
the "interim" Invisible Woman is a repainted Iron Man Spider-Woman
figure with clear-plastic platform and shield while the Series II
Invisible Woman is a newly molded clear figure also known as "clear
Invisible Woman" (see Q4.2). The "interim" figures had a short
production run and are no longer being made, but are probably still
available in some areas. "Interim" is not the official name for
these figures, but a term dubbed by rtmers to distinguish the
repaints from the Series II figures.