The way I see it, if the difference between the high and low grades, as originally produced, was only in wood and engraving - then the upgrade is just a matter of personal decision. If, on the other hand, the high grades are conspiciously different from the low grades in aspects like quality of barrel boring and filing, weight and balance, mechanical fit, etc. - then it's a golden-ring-on-a-pig's snout case.

Russian Hunting Shotguns