DSO Code question

[N20neenee]

I was looking at my 90 Wisconsin Trooper and thought I would de-code the DSO
It has a "43" followed by a "0086"

Does that make it a Milwaukee, Reserve Pool car?

[ImEvil1]

Check out the pic here: http://www.specialservicemustang.net/DSO.html

Last 4 is just the order number.