My 16 hammer..170xxx range has swivels. The barrel finish is original, and bores are perfect. Original varnish is better than 95%. I'm not a swivel fan ! The stock is easily fixed with a stock shield. but I wonder about filling the 2 small holes in the bottom rib. I Know of an early lettered Parker with identical swivels..so I guess it's possible they are factory .?? Any thoughts ?...thanks..Jerry..