1913 Erfurt

[Pit_Snipe]

Greetings, I just inherited my first Lugar. From what I have learned so far it is a numbers matching (4009) 1913 Erfurt. The back story: My grandfather traded his sidearm with a German Officer who defected to Canada. In the pictures you will see the unusual grips. They are made from the windshield of a bomber that he crash landed somewhere in Texas. I'm not really concerned with value (outside of insurance purposes) as I never intend on selling this piece.
I have some questions about making it safe and restoring it somewhat. 1st question: what to do with the plating? It is in poor condition. Strip and reblue? Leave alone? (I really like blue!)
2nd question: The rifling is bad! Almost completely missing. Obviously accuracy would be affected, but would it still be safe to shoot. If not what are my options.
My intention is to display this piece (with family pride) and shoot on occasion.