Only to a collector, and they want 95% to 100% original finish. Apparently your gun is way past that. So far as that's concerned, the company Parkerized some guns themselves. I would go ahead and refinish it the way you want.
Now if it had a substantial amount of the original finish that would be something else again.
One side note: If you bead-blast the gun prior to refinishing it (as you should) be sure to tape the breechface as well as other places you want to remain smooth. And protect the bore - front and back - or you could have problems later.