For most collectors any restorations destroys the collectors value. That said many guns have been freshened up over the years and most people do not even know about it. It pays to keep high grade guns in pristine shape or have them returned to pristine shape if it can be done with out detection. Badly done restorations make guns into shooters in my book. If anyone knows how to do it right it is DelGreco. That assumes the last customer wanted it done right.
Now another thing to consider is that there are not that many Parker VHE 28's out there. How badly does your customer want one? If he passes on this one he may have to wait months to years before the next one comes along. Look at the quality of the restoration before you decide to pass on this gun. If it is well done I might just accept the gun as is. It would be much higher on my list than one of the later repro Parkers.
