Actually it is silver plate. If you handel the gun alot the high spots will polish bright and show the machine engraving very well. If you want it all bright you can polish it with some silver polish on a rag but be carefull not to over do it and wear thrue the silver. Don't let any bore solvents come in contact with the frame as it could lift the silver off or start it pealing. My 200E has it's silver pealing around the firing pin hole on the right barrel. This is good old advice for nickel plated revolvers also.
