Unstacking the Deck: Marvel Masterpiece Series V

Fleer/Skybox 1996

Vital Statistics 

100 base card set (including a checklist card, plus a six card "Gallery", six card "Double Impact", and nine card "Painting Redemption" chase card subsets. 

Card fronts feature full bleed artwork with holofoil character and subset names, as well as the Marvel Masterpiece logos. 

Card backs feature a portion of the card front image overlaid with the character's name, a fact about them, their first appearance, and the names of their creators. 

Firsts and Other Notables

The final "Marvel Masterpieces" set of the initial 90s run (Upper Deck would relaunch the series in 2007, with sporadic releases over the next few years, most recently w/a set in 2020), these cards are amongst some of the most rare and sought-after cards of this vintage (and that was even before the recent boom in the trading card market) due to the small print run of the series, published as it was while the trading card market was in the midst of collapsing. 

Unstacking the Deck: Marvel Masterpiece Series IV

Fleer 1995

Vital Statistics
151 standard cards (including the checklist card), plus a 22 card "Canvas", 8 card "Holoflash" and two card "Mirage" insert sets and a "E-Motion Signature Series" parallel set.

The cards are almost presented entirely in portrait layout, with the card fronts featuring only the Marvel Masterpieces logo in the bottom left corner and the character's name in gold-foil writing in the other corner.

The cardbacks feature the name of the artist who painted the front image, along with a relevant quote about the character written from the perspective of a specific ally, enemy, or love interest of the character, all overlaid atop of smaller, skewed, copy of the cardfront's main image.

Firsts and Other Notables
Art for this series cards came from four artists: Dave Devries, Dimitrios Patelis, Peter Scanlan and Nelson, with each artist painting 38 characters along with two other artists, so that the first 114 cards represent 38 character who each receive three cards, each painted by one of the four artists. Each artist then contributed paintings of nine unique characters each, such that the final 36 cards represent characters receiving one card each (each of those "solo" cards features a comment on the cardback from the artist, usually explaining why they picked that character or detailing their artistic choices).

Unstacking the Deck: Marvel Masterpiece Series III

Fleer 1994

Vital Statistics
140 cards (including the checklist card), plus a ten card holofoil insert set, available in four variants (red, bronze, silver & gold), a ten card Masterprints insert set, and a nine card PowerBlast insert.

Additionally, there is a parallel set in which all 140 of the main cards are produced with the Hildebrandt brothers' signatures reproduced on the front of each card in gold foil.

Cardfronts are full bleed, featuring only the character name center-bottom and the Marvel Masterpiece logo on the top left corner, both presented in gold foil.

Cardbacks are landscaped, featuring a zoomed-in reproduction of the cardfront image, along with a brief character bio and a behind-the-scenes quote from the Hildebrandt brothers regarding the creation of the card specifically (or the set in general).