There are 10 K.C. Herren trading cards tracked on HobbyCardIndex, spanning Baseball. The most valuable is the K.C. Herren #4 at $1.79 raw.

Source: HobbyCardIndex · Updated daily · https://hobbycardindex.com/players/k.c.-herren

K.C. Herren Cards

Name: K.C. Herren Card Price Index — Historical Data
Creator: HobbyCardIndex
License: https://hobbycardindex.com/legal/terms

10 cards · Baseball

All K.C. Herren Cards