yes, this had been reported by Chet 15 ( the RENE) way back, heck I think it was in the Feb 2004 issue if the RENE Reference Guide of Ruger Firearms Vol. One....my wife had one but did not collect New Bearcats so it went it away years ago, and at the shows we've seen them , and yes were a few dollars more.....the range noted by RENE was for the stainless KSBC4 in the #93-19538 to 93-21176 and he noted at first 270 ,maybe up to 300??? so you gotta look at any of these you come across as 99% of the Ruger collectors have NO clue what it is, UNLESS they KNOW and are looking for it...