S&W M29-2 .44Mag, 4" Hogue rubber grips, 85-90% finish.

The blueing looks good, slightly worn on the barrel but no rust or scratches. Rear sight body changed to some sort of white bar with outline, I don't think it's S&W factory. No box or papers. Great action, pinned barrel and recessed cylinder.

Any ideas of its worth?
Thank you