Originally, sport trading cards were mostly head or body shots peppered with some action pictures, and some of Marvel's early offerings followed this standard format.
Others reprinted panels from the original comics. Products from this time period include the 1966 Marvel Super Heroes set from Donruss, like the one above.
As of 2010, the set of 66 cards was worth approximately $150, but the unopened packs can fetch $50 apiece. Occasionally, especially during the 1960s and 1970s, card sets would take a more humorous approach, such as 1976's Marvel Super Heroes Stickers, which booked at $90 for the 40 stickers and nine cards in the set.