The gun you ref was a late entry to try and produce a Belgian O/U that could compete with the Japanese contract Mirokus or said another way, a less expensive alternative to the classic FN built Browning designed Super. There were two versions of the gun, that I know of. One was a blued 'standard' gun and the other was a nicely engraved silver reciever version with much better wood, a deluxe grade, if you will. I have the impression that the guns were never that well known and not that widely distributed. I also want to say that it was a fairly short run at <2 years, but that is a faint memory only, and it is mine, so best check further for the facts on that. I don't think that there is really any established market value for these guns. I have a deluxe version and have been offered over $2k for it several years ago. Prolly should have taken the guy's money, but WTH, I enjoy shooting ZZ's w/it as it is light and fast .. and it is mighy pretty too with its fine hand cut English scroll and rosette's. It has great balance & engraving and throws good patterns, but it lacks the detail of hand fitting & polish that the higher grade Supers show when the action is opened. I have not had the buttstock off, but I would be seriously suprised if it were polished like any FN Super from a pigeon grade on up. Still, I like it well enough.
My advice is, 'if it fits well enough and you like the way it feels and points and the price is not stratospheric, then buy it and enjoy. If it does not work out you can bail at the next show or next season for something with more appeal. Folks get too carried away with some things. We take instant depreciation on new car purchases all the time or as my fortune cookie said today at lunch, "Don't worry about the world coming to an end. It is already tomorrow in Austrailia." That is saying only that sometimes we pay for the experience .. or the moment as it were. its the best I can offer and it didn't look like you were getting much response. Hope something here helps you out.