I would have thought that any work that was not tip-top would detract from value, and getting them done really well would not add as much to value as it cost.
I can’t see that you could get a veneer that would match that closely, so you’d need a French polisher who knew what they were doing. Could be worth getting a quote.
I’ve got some treatments that might cheer them up a bit. Not worth the cost of veneering on these (You will not get a match) - If you want to bring them over I can photograph for you which may help a little?
I’m going to North Wales in 3 weeks time so if @Stu drives them up to me in Wigan before then I’ll be happy to drop them off for him. He’s a mate so I’ll only charge him for my diesel and he can have my time as a freebie.