I don't really agree that a restoration is a good idea. For it to look the way it originally did, the restoration will not add its price to the value of the gun. As it stands, I think its worth around $800. Perhaps restored it would be worth more, maybe around $1000 or so, but for that increase of X, you will spend X + $100s to get it, meaning that it is not good fiscal decision. So in other words, this $800 gun, with say a $700 restoration, would not then be worth $1500, IMO. On the other hand, its fair to say that the restoration would add to the value, but in this case, IMO, it would NOT add its total cost to the value. Restored it would be worth more than $800, IMO.
Of course, you could say "it would look better refinished" but remember, beauty is in the eye of the beholder. Some would say restored it would look better, while others would prefer it now. The people (myself) who prefer it now, prefer its original look, which cannot be brought back. If you leave it as is, you could always later have it restored or have an owner after you make the call. After its restored, it cannot be reversed.
As for Jim Ks statements on how there is so little finish left that restoration makes some sense, I would say that despite it being true that the condition is low, its still in essence a waste. I know some may disagree, but really, its simple math, as I already stated. One has to understand that its a collector gun, and that its not a rare bird, so, there is impetus for a collector to shop around for a 44-40 with a 6in barrel, which is original rather than purchase a restored example. When talking 44 Frontiers, 6in guns are probably most common. Of course, a restored version would cost the collector much less than 90% finish version BUT most collectors of such guns would rather pay more to get more. I could see a CAS buying a restored gun, but some would get an original worn one (your Frontier, currently) instead, because that would cost less. In addition, many collectors would pass on it automatically because its not a rare variation AND its restored. Some collectors (myself) will sacrifice condition, or originality to get that rare gun, but this gun isn't that rare gun, so there really isn't a point to forgive a refinish in this case.
As for Turnbull, no doubt he would do good work, but IMO you are paying for his name because he is that established. There is Dave Chicoine, and many others who would do great work. Perhaps ask around at the S&W forum, in the antique section, for a list of good restoration guys, if you make that choice.
