Ralph, I beg to differ. I believe the grips were fitted to the gun and numbered. Remember this was done before final finish. At that time service dept might not know whether GA would be attached or not. Mine (only 2#s away from the one above) are numbered. The grips would have been fitted so the customer could use them with or without the GA. SO far no S&WHF letters have been found with customers complaining "I took the GA off and the grips don't fit right" LOL Maybe a plausible explanation for the unnumbered grips is they were replaced (damage to originals), or it was simply ordered as an accessory, or somebody forgot to # them. If these danged things could only talk, they could do lots of 'splainin'