Yes, $350 is a very good price. S&W quit making K-Frame Magnums about 2005 and the prices of such have been steadily climbing since then. The 66-1 should IIRC, still be a pinned and recessed gun which adds to its collector value but it should also have the relocated gas ring which solved the cylinder binding on the earlier no-dash 66's. In my area, a 66-1 in nice shape would easily bring $500+.
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