Has to be a post 1969 with low relief and the wide edge spacing around IGWT. No short bottom W in WE. Not a 1968.
My first thought when seeing the obverse and MM specifically was a 1985-89 D due to the huge size of that MM.
Depends on how much work it put in at the gym. Can't skip leg day. EDIT: Also, it looks copper, so my earlier guess was probably wrong.
My opinion it's 1980 or 1981 D, also My opiniomn, the pictures aren't great, but I think It's RDV-004. I guess it could be ODV-031/RDV-004 really hard to tell, no idea how to tell if it's 1980 or 1981..... Suppose it could even be a copper 1982-D, but would need to be large date I think also. guessing.....