New guns black pins.That's the guard,lever, and cover plate pins ,others can or should be colour cased. A lot of renovated guns have the pins flame blued because of the risk in loosing them in the blacking tanks or because people think they look good . It is often ,when doing a service or light renovate with out reblacking all parts the pins are flame blued to look good .One thing I hate is to see an old sidelock or hammer gun with the trigger plate blacked ,even blacked hammers are a personal choice ,but not mine. As is not polishing the knuckle after re black on a forend iron .
As a point of interest some London makers whom I will not name , started a few years ago to finish there guns with brushed finish all over. This is the new way ,shows up the engraving,etc. Probably more to do with the fact that there in house colour hardening was awful so they used other hardening methods, or that they were using cast guards and levers that would not black well had nothing to do with it.
