My Model 19-4 came to me wearing aftermarket grips. I'd like to find original-style, target grips for it and I've learned that there are two types. I see that there are the grips with the deep relief cut for speedloaders, and the earlier type with the "football" cut. Searching the serial # database on this forum (thank you for that), I see that my revolver was manufactured in 1979. Of those two type grips, which would have been originally installed on my pistol? Thanks for any help.