variations - are we missing any?

[538]

More variations:
1990 Bowman 1st printing/2nd printing: airbushed uniforms, backgrounds
1990 Bowman Art Cards: single or double asterisk on back (* or **)
1990 Donruss INC/INC. : in copyright on back
1990 Donruss Splatter variations: factory and wax/rack/cello versions differ
1990 Donruss Grand Slammers: with or without black bars in back borders
1990 Fleer All-Stars: text cropping variations on back
1990 Fleer Baseball MVP's: Thick black line/bar at top of photo/border
1990 Fleer Canadian: copyright on back notes being printed in Canada on this limited release
1990 Topps Traded: Gray backs (wax) or White box (factory)
1990 Topps Traded: single or double asterisk on back (* or **)
1990 Upper Deck No Copyright: cards #101-199 with or without copyright line on back
1991 Bowman E*: players with E** print designations can be found with E**, E*, E * variations.
1991 Donruss INC/INC. Noticeable by the lighter and darker cardstock
1991 Donruss Border variations: Factory and wax/rack/cello versions differ
1991 Donruss Grand Slammers: Blue and Green borders
1991 Donruss Grand Slammers: Blue bordered cards have three different varieties
1991 Fleer: due to use of 2 different printers, each card comes in two versions, most very minor
1991 Stadium Club: most (possibly all) cards come in 2 different print designations (ex: A* and B*)
1991 Topps A* and B*: all cards with this print designation come in either bold red 40th or dull/ghosted 40th logo on back
1991 Topps Traded: Gray backs (wax) or White backs (factory)
1991 Topps Traded: single or double asterisk on back (* or **) (gray backs only)
1991 Upper Deck: Holograms on back come in four different ways: 90-91-style (used for hi# 90-91 Hockey), 1990-baseball style (used for 1990 UD baseball), 1991-style (used for many 1991 UD products) and in 1992 style (used on 1992 UD, 1991-92 Hi # NBA/NFL and NHL).
1991 US Playing Card All Stars: US copyright, International Copyright and US Copyright/Silver Edged versions exist.
1992 Bowman E*: E* sheet players can be found in an E variation (no asterisk).
1992 Bowman Foil: All the non-"SP" foils come in two different photo croppings.
1992 Donruss INC/INC.
1992 Investors Journals: Blue, Gold, Purple borders
1992 Leaf INC/INC.
1992 Leaf Black Gold: Some, possibly all can be found in INC and INC. versions
1992 Score Dream Team: Backs face left or right
1992 Score #736-776: Come with or without the "rookie prospect" banner on front
1992 Stadium Club: most (possibly all) cards come in 2 different print designations (ex: A* and B*)
1992 Topps McDonald's : single asterisk or double asterisk (* or **)
1994 Upper Deck Collector's Choice Future Foundation: Silver Sig cards can be found with base-white lettering on front or with appropriate silver lettering on front.
1994 Upper Deck Collector's Choice Future Foundation: first letter in text on back can be found in white or gray color.
1994 SP Foils: come in either white names on back or gold/bronze names on back
1994 Upper Deck Electric Diamond: some, possibly all series 1 cards come in a "silver" version where the stat heading bar on back is silver instead or bronze
1995 Stadium Club Foil Subsets (Transactions/Extreme Corps): Minimum of 4 different color varieties.
1997 Score Hobby Reserve: HR prefix to number and no prefix types exist.
1997 Upper Deck Capture the Flag: some, possibly all cards in this subset come in either white or gold backs
1998 Finest Mystery Finest: Base, refractor number identified with 'R', Refractor number identified with 'Refractor', Refractor identified with 'R' with no refraction
2004 Topps Series 2: Some cards can be found with "53 Years of Collecting" stamped on front under name.