Agree with a thin rolled planchet.
[ATTACH] [ATTACH] [ATTACH] [ATTACH]
A 1916-D. Worn but readable. [ATTACH] [ATTACH] [ATTACH]
A Morgan Dollar can be rolled thinner or thicker than normal just as any other coin can. The chart you showed contains weights that are not...
Looks good to me.
I’m not a RPM collector but it could be one. It could also be from a hit at the top left and west from circulation.
Separate names with a comma.