You confused me with the words "Match Target". What you've described is the "Sporter Competition HBAR" model, and it sounds like it has the standard factory features. The box should give the model number as R6700. It is, in fact, a pre-ban rifle confirmed by the ser. no. "CH" prefix, but it's not a "Match Target" model.
You still confuse me with the term "Accurized"! Does it appear anywhere on the box or in the literature? I'm aware of the "Range Selected" version of this rifle. It would have come with a scope mount and the Colt Delta 3-9x scope in lieu of the detachable carry handle, however. It would be a model no. R6700CH. There was also a model R6701 available that came with the ARMS scope mount base and a pair of Millet rings.
There is a later Colt Accurized model, but that would be a CAR3, model no. CR6724, and does not resemble what you describe.
If you have some documentation that this is truly an "Accurized" model then perhaps your rifle is a limited edition that never appeared in the Colt catalog. Colt has been known to do this at times. If that's the case it would be worth a premium to a Colt collector, but I'm not one, so I can't place a value on something that I'm not sure of.
If this rifle is a garden variety R6700, IMHO it's lost its premium as a pre-ban Colt because of the AWB sunset. Unless a collector has a desire for this particular rifle (after all, it's remained NIB for over ten years) it has maybe just a little more $ value than the MT6700 (Match Target) which are still available new for about $900.
HTH