Those type grips came on my 1992 .44 Spl. I consider them an atrocity and replaced them quick.Those grips do not appear to be factory and they do not fit the gun very well.
Grips aside, I really, really like this gun! I’ve always been a fan of engraved blued guns with plain case colored frames. The initials wouldn’t concern me much based on where they are. Exceptional classy gun you have there, stevejagger.