That is not the same finish the top one is satin nickel the bottom is just nickel
If you want to nickel it you would have to send that to a smith its a pricey job probly 200 bux to strip it correct alone then add the cost of the nickel dipping and polishing
Why dont you like satin nickel ????
"Would a can of brasso shine 'er up?" NO you wont rub off that finish you would have to sand it off and by sand I mean sand or bead blast dont try this your self with sand papper it will just cost you more to fix it and your gun will be worth a lot less if you bubba it...
For me I have a brushed satin nickel fame and I love it there is not many around from what I see on here I see just the dipped satin like #1 pic