I am no photo expert, but from what I have seen, photo restoration isn't the taboo thing it is to cards (and which I agree with). As long as full disclosure is made upon change of ownership, then it's a positive for the item. In general photo's are display pieces and I think that might be the reason for the prevailing sentiment. Great item. Congrats....
As just mentioned elsewhere, the only thing left in my collection, the 1903 Horner, has been very expertly, and in the least dramatic way possible, touched up. It has had deacidification done to it and put behind UV protecting glass. I am 100% sure, at least in my mind, it is better with the restoration and preservation than without it. And I didn't even know it was restored when I got it. That is how much I feel about the positive nature of restoration to a photo. Others might disagree.