1990s Marvel/DC Skybox 3D Cards
 

I've been running through an old collection of 1990s Marvel/DC cards and came across these three. They appear to have 3D pop-outs of the illustrations (see 'unnamedc' image) and include the artists' signatures. Anyone have any background info/know of any comps on these?

They appear to be custom done (there was not any officially released 3D versions of 1993 Marvel Masterpieces cards like the Nightcrawler). I see these pop up on ebay from time to time, may want to check there for completed listings.