That is an awesome set! I would love to have a full set, especially that year.
I believe that was the last year they were made wiyh the old Murphy design handle. I think the year was 1950.
Great set!

Congrats!
Unfortunately my experience has been much the same as Mark's.
The handles however can be polished.
My own experience has been that dishwashers cause a lot of tarnishing on the aluminum handles. I have given several Gerbers to a granddaughter who had lived with us when she was in high school, so she had heard my "Never Put a Knife in a Dishwasher" lecture a few times.

Her husband put a Miming in their dishwasher and turned the handle nearly black. The only was I was able to get the tarnish off it was using Black Magic rouge on an 8" wheel and then a second polishing with No Scratch Pink.
Perhaps someone knows of a chemical solution for polishing them, but that is what I had to do.
Having managed a cutlery store for several years, I have seen many knives damage by dishwashers. Henckel's handles would pit and used crack from washing in dishwashers. That happened to my grandmother's Henckels, I had warned her not to put them in the dishwasher.
I have seen blades nicked from things banging into the cutting edge, not to mention the danger of someone cutting themselves when taking the knives out.
I know Henckels warned against damage to the temper of the blade from the heat in the dishwasher and I another company issued the same warning as well. I have not personally seen that happen to a knife, but that was part of the educational information which we received from the salesman.
Hopefully, you have a buffer or someone knows another method of polishing the handles.