Most are standard sized cards (2.5" X 3.5"). They are typically made available to the public before the release date of the cards. Usually the text on the back of a Promo card talks about the upcoming set.
(LOT OF 11) Promo Sheet Valiant Comics--Valiant Era 2 (1993)
Vintage 1993 Comic Promo Poster THE VALIANT ERA ~ ALL CHARACTERS 34x22 -SIGNED
Triton Magazine Comics Cards & Collectibles #5 June 1994 Valiant Shadowman Cover
X-O MANOWAR MONTH (1994 Valiant Comics) -- Promotional Poster
VIRTUAL REALITY - YEAR II, NO. 0 (NOV/DEC 1994) - DRAGON BALL Z
