Don't know if this will help but I was looking at one a few weeks ago with a 5" bbl. I'm not good with %, but my guess would be 85-90%. S/N was 983xx and shipped Apr. 1921. It had what the GS said were Ivory grips. Turned out they were not, thanks to a lot of help from Forum members and a phone call from Ditrina. ( Thanks to all). The price was $800 and when I told them the grips were not Ivory they went to $700 and I passed on it.
Has anyone checked the blue book on this gun? Seems to be quite high on this.