Seen in show, historical card game (5)
I believe the answer is:
whist
'card game' is the definition.
(I know that whist is a type of card game)
'seen in show historical' is the wordplay.
'seen in' indicates a hidden word.
'WHIST' is hidden within 'show historical'.
(Other definitions for whist that I've seen before include "Card game, often played at a "drive"" , "Card game for four" , "Tricky card game" , "Popular card game, sometimes solo" , "18th-century card game, the forerunner of bridge" .)