Well on barn finds, if tins aren't dented and paint is good, that might be half the value, that at nice gauges.
Since you are so appreciative of our critiques, here is a 5 dollar before and after test / opportunity for you to take, if you want to know what the wheels would like "back to cast" color.
Buy a roll of grey duct tape, tape the wheels while still on the bike, cut around the tire, etc..it will provide a "hillbilly look" but it will allow you stand back 20 feet and squint, you will then be able to see the difference with grey wheels vs black. All for under $5 and an hour of your time.
Im of the opinion wheels are the "jewelry" of a car or motorcycle and right now with black wheels, fork tubes, motor and schocks, your Gal is missing her jewelry.
Hope this helps but once again, it's only my opinion and I'm old.