Michael Nesmith was born Robert Michael Nesmith, corresponding with his age of death.
Robert = 78

He has died on December 10, the day leaving 21 days in the year.
Jesuit = 21 / 78

And he has died on a date with 43 numerology.
The Monkees = 43
12/10/11 = 12+10+11 = 43

He also died 20 days before his birthday.
Death = 20

He died 38-days after the World Series ended in Houston (Ended November 2).
Death = 38
Murder = 38
Killing = 38
RIP = 38

Link.

And notice the mention of 1967.
Blood Sacrifice = 67
Human Sacrifice = 67
Michael Nesmith = 67
-Satanic = 67

Their first album released in ’66, 55-years ago.
Satan = 55
-Blood Sacrifice = 257 (55th prime)