There are 9 Wind-Up Frog trading cards tracked on HobbyCardIndex, spanning Baseball. The most valuable is the Wind-Up Frog [Gold Foil] #31 at $222.22 raw.
Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/wind-up-frogWind-Up Frog Cards
9 cards · Baseball
All Wind-Up Frog Cards
Wind-Up Frog [Gold Foil] #31
$222.22
Wind-Up Frog [Red Foil] #31
$39.99
Wind-Up Frog [Rose Gold Foil] #31
$21.10
Wind-Up Frog [Orange Foil] #31
$4.25
Wind-Up Frog [Blue Foil] #31
$4.00
Wind-Up Frog [Green Foil] #31
$3.68
Wind-Up Frog [Purple Foil] #31
$2.26
Wind-Up Frog [Aqua Foil] #31
$1.25
Wind-Up Frog #31
$0.99