I literally just found this and had to post it maybe someone can confirm that I'm right or not. I think I found a possible large date over a small date. Take a look...I know it's a little beat up but...
The 1960-D LMC has a SM date over LG date variety. The 1970-D LMC does not have a known variety of this type.
Very circulated indeed nothing like a 1959 LMC that looks almost uncirculated that I got as change from my local Riteaid a while ago.