Got my replacement grips in! Original Ithaca factory grips.
So the new pair had a discoloration on the left grip. They're 70 year old used grips, so you take what you get I guess.
Fortunately, the right grip was the one that was cracked and the replacement right grip was perfect. So I just replaced that one and continued to use the original left grip. I would post a new picture, but it looks exactly the same as the old picture on page 1. . . LOL.