Well....the internet wayback machine shows schon's website having the SL & ST lines on a Jan 25, 1999 screen capture. A June 21, 2000 screenshot of their website has STL, LTD & 2000 lines, but no SL's. So that kinda shows approx. when they were phased out. The palmer collector website has a catalog from 1990 showing SP & R lines but no SL's. Take into account the change of the font on the end of the butt and the ACME pin of 1993 and I would guess the SL line appeared in 92 or 93 and ended 99 or 2000. This is all just an educated guess. :smile: