Difficult and highly desirable Cuban issue depicting Kansas City native Frank Duncan a star catcher with the Kansas City Monarchs who played Negro League baseball for 28 years. After his career drew to a close (and he and his son pitcher Frank III formed the first father-son battery in pro baseball history) he became a manager serving as Jackie Robinson's first professional manager in 1945. Population DataSGC Population: 9 total graded 1 at this level 3 higherPSA Population: 1 total graded 0 at this level 1 higher