Concrete is a comic book series created and written by Paul Chadwick and published by Dark Horse Comics. His first appearance is "Dark Horse Presents" #1 (July, 1986). The eponymous central character is a normal man whose brain was transplanted into a large, stone body by aliens, and who lives an extraordinary life on Earth following his escape.
Concrete has been running for 50 years
Concrete has been running for less than 50 years because 2019-1986 is 33 which is less than 50. I think the system is bad at calendar math