Who knows the history or timeline of Pearl's Sensitone Snare line?

I have often stated that I feel Pearl's Sensitone line is the under rated workhorse of the snare drum world. I have had several move in and out through the years in a variety of shell material and sizes and have never had a bad one. Recently I decided I wanted to add a nice high end crack to my

6.5 x 14 Brass Snare Drum with 2.3mm Triple-flanged Hoops

Pearl Sensitone Heritage Brass Alloy Snare Drum - 6.5 x 14-inch - Black Nickel

Pearl Reference Brass 1465 vs. Pearl Sensitone Steel 1465 (Alexey GLÜCK Menshikov)

Pearl Announces Further Products Following 75th Anniversary - Drummer's Review

Who knows the history or timeline of Pearl's Sensitone Snare line?

About Pearl Pearl Drums -Official site

Pearl Sensitone Heritage Alloy Snare 14 x 6.5 in. Black Brass

Heritage Alloy Aluminum Pearl Drums -Official site

Calling all Pearl People Do I REALLY Know What This Snare Is?

A History of the Drum Set: Toms, Snares, and Kicks

Pearl Drums - Wikipedia

Sensitone Pearl Drums -Official site

Pearl Sensitone Heritage Alloy Snare 14 x 6.5 in. Black Brass

Pearl Sensitone Snare Drum Shootout

CMS Snare Drums Pearl Drums -Official site

Calling all Pearl People Do I REALLY Know What This Snare Is?