I have a F grade in almost the same Serial number that is as you describe with the bushed firing pins. Minw was quite worn and at first I thought that bushed firing pins were a later add on but have since concluded that they most likely were original. The engraving is sparse but the stock wood is very nice. Lefevers come ia all kinds of combos and you never should be suprised by what you come across. I sure never do.