Bowen Rough Country S&W rear revolver sight with square notch, white outline blade, .385 height.
It took a year for the sight to arrive and has never been installed.
Brand new in the box.

$115 with free shipping.

Description from the manufacturer:
These heavy-duty adjustable rear sights are dedicated designs engineered specifically for Ruger and Smith & Wesson revolvers. The buttressed body and a substantial blade tenon afford increased protection for the blades. Available in a wide variety of blade styles and heights, blades are readily interchanged without removing the body from the revolver. Made from heat-treated alloy steel, these sights are finely machine from bar stock and matte black finished to reduce glare. All square-notch blades are .125 wide, the industry standard size.

I'll take the Bowen RC sight @$115 shipped. PM follows.