Not much information.
Believed issued only for the state agency Commission of Fisheries; later named South Carolina Wildlife & Marine Resources Department (S.C.W.&M.R.D.)
1970 standard-size
white/red
1972 standard-size & motorcycle-size white/green
1972 standard-size & motorcycle-sizewhite/brown
1980 standard-size
blue/orange
1981 standard-size & motorcycle-size black/white
1982 motorcycle-size black/yellow