I would absolutely not shoot it. I own a number of guns that I have never fired, probably at least a half dozen. I bought them to shoot, but never got around to it. I own a few guns that I will never shoot. I bought a Walther P38 last summer out of the paper. It is a 1945 production gun complete with all the Nazi markings etc. I never really liked the P38. I have any number of other semi-auto 9mm handguns to shoot. I bought this one just because I thought it was cool. And it is historical; it exhibits the very poor finish common when a country is going down the tubes. Firing it would not decrease it's value, but what am I going to get out of it that I wouldn't get out of just firing my Glock 17 or one of my Hi-Powers, or my P89, or my Kel-Tec P11............... Is it keeping me awake at night knowing that I never shot them, no. Do I still enjoy owning them and take great comfort in knowing that they are there in my safe, yes. Do I still take them out and admire them ? yes
I own a modest collection of S&W Revolvers. Nothing rare, just pinned and recessed revolvers, all made within the last 40 years or so. But to me, they are so beautiful that I won't put them in a holster. I will shoot them, but will not risk wearing the finish of them with a holster. I have other revolvers that I can carry, and if I nick them, fall with them, whatever, it won't break my heart. The beauty and my pride in ownership far outweigh carrying them to me.
I have a few old pocket watches. Watches my grandfather and my father owned back when men carried pocket watches. One of them is the gold watch my grandfather got when he retired from the steel mill. Do I have some desperate burning itch to carry them to see what time it is ? No, I have other watches that do that just fine without the risk of losing them or damaging them. Does this now make them something that isn't worth owning ? Not to me.
It is your gun and you can enjoy it anyway you please. I just don't see what shooting it will get you and we have already discussed what it will cost you.