Unless you really want THAT gun I'd look for a used 3" or 4" Model 24 or better yet a used 629-3 or dash 4 with endurance package in which you can shoot both 44 magnum and 44spl.

An original factory nickle will have the N markings.

Sorry,I'm not a nickle lover.Price and condition should be the determining factors.

If it's not factory nickle then stay below $650 in your offers.

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NEVER GIVE UP YOUR GUN