question about crossover grades

When submitting a card for crossover to psa with a minimum grade specified .....what does m/g represent in the grading results?
I know it has probably been asked before but I dont remember.Thanks in advance.
I know it has probably been asked before but I dont remember.Thanks in advance.
0
Comments
Although not technically a crossover, I did crack some old CSA cases and submitted them to PSA...each got a grade higher. A 1990 Topps Tiffany Sosa came back PSA 10, Topps Desert Storm Canseco got a 9.
Kevin