Red ramp front sights

[Have gun-will travel]

Can anyone tell me when S&W started putting Red ramps in front sights?

 

[Laketime]

Add to this question.Has the basic material changed at all over the years.

 

[Doc44]

First cataloged in 1952 as the Blanchard front sight blade and by late 1952 the S&W red ramp. I believe the material has not changed over the years.

Bill