@Slicer021 Here is some data gleaned from back posts on WKC that might be helpful:
"
True grey kettles:
1963 22.5 two tone grey mist aka "The Plainsman" had a MLH.
1990-1991 light grey 22.5 BAR-B-Q KETTLE and OT+/MT.
Late 2000's Crate & Barrel Performer dark grey.
Performer Gen 1 : 1990-to-2005 (called the SS - Stainless Steel) in Grey
Performer Gen 2 : 2005-to-2009 1lb LPG, Fiberglass top, in Grey.
"
and, my, Performers.
Of NOTE: Many of us prefer the SSP because you can set hot whatever right on the worktable
SJ