Help with data plate stamping

[Warren Lovell]

I have a "Responsible Agency" data plate.
It has boxes to stamp in. My question is - what do you stamp in them? (The question marks mean blank space to stamp in)
Seems to me maybe a tech manual number goes in there...I just don't know!

Example:
_______________________________________
Responsible Procurement Depot
Agency Maintenance
_______________________________________
CHASSIS U.S. ARMY ???????????
_______________________________________
BODY U.S. ARMY ???????????
_______________________________________
M.T.D. EQPT ?????????? ???????????
_______________________________________

Thanks for all your help guys!

Warren