I looked at a .38 M&P today. Serial number was C 787xx (IIRC). 4" blue, faint turn line, diamond Magnas with a sharp shoulder. I didn't check the grips for a SN, but I'm pretty confident they would match. I already have one, so no interest on my part. The store owner was asking $485 and I didn't dicker. Don't know if he will ship or not. I have no connection to the store.
Not sure if I'm allowed to post the store info or not. The shop is located on Cedar Springs Road in Rural Retreat, Virginia.