The aluminum one (like yours) is the bx200.
This is one of the "holy grail" bikes for bmx collectors. Aside from the wheels and missing grips, that one looks original, and the stickers are a plus.
Value to the right buyer could be $1000 or more.
I had a prototype, bx200 I got from the father of an ex-factory Kawasaki MX rider who was killed in desert storm, and sold it for $500 on the spot to a guy who stopped me on the way to the liquor store the day I got fired in 1996.
I heard mine was now the most sought after one from a collector, and is worth ten times more than I got for it.
Every now and then they show up, but most are coveted by their owners. Saw one on the local CL for $400 and it sold within minutes.
If you haven't got it yet and you can afford it, get it. It's a cool bike that rides like crap, but a great investment.