new to forum, i own a 200M but needs clarification

Hi, i am new to this forum, i have a supposedely 200M that seems a mismatch of parts.

it has hi/low range, pull crank, electric start and chain drive. it says on the back 200M. cant tell if its a 84 of 85, or if its a 200M, 200E or what else.

There is several parts missing on it and i would like to resurect it, altough it still works (lol).
So making sure of its nature would be nice before buying any parts.

for now missing
-rear trunk/lid (there seems to be a lot of variations on this)
-many bolts and screws
-brakes handles
-lights

thanks for any help.