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

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

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