My 60-15 is an enigma. Not that it really matters but the SWSC isn't much help determining the birth year. Serial number is one of the dreaded three letter prefix numbers, DAF58xx. Can't find DAF anywhere in the book but I've narrowed it down to 2005-2006. And regarding the dash numbers, the dashes the dashes 14, 15, 16 and 17 are all intertwangled like this:
M60-14: 2001 LadySmith with ILS
M60-15: 2001 3" Target with ILS
M60-16: 2001 .38 Special 2" fixed sight with ILS
M60-17: 2001 .38 Special 3" Target with ILS
M60-18: 2005 .357 Magnum 5" Target with ILS w/ 2 piece barrel
No matter. I love my 3" Model 60 and it shoots real nice so it's a keeper but holy cow, S&W really got wrapped around the axle on those dash numbers.