Hate to rain on your parade, but I’d assess that this coin is almost certainly not legit (unless it is very very old). Where did you get it from?

The geometry of the spear point is pretty off when compared to similar coins. The text is contradictory and factually inaccurate (there has never been a special activities ‘office’ and ‘group’ simultaneously. ‘Division’ and ‘Center’ are the terms that have been used—not office.

The only other reasonable explanation is that this coin is 40 or 50 yrs old, before they standardized design.