Don't Know Where Else

[Rick]

To post this uniform coat.
Horstman Philadelphia buttons identified as State of New Jersey (?) .

Hand sewn; silk striped sleeve lining; I cannot figure out the monogram .

Any ideas as to age and meaning of monogram ?

Blue wool; staples for shoulderboards .

From my Hippie daze; after a 30 year hiatus come home .
I'd forgot I even had it .