I am assuming you mean the silver package which depending on year and time of year changed. It was a group of upgrades the factory lumped together depending on demand. Late model 2013s had some nice add ins as they were basically using up items ending the model line.
Yes silver package, looking at a 2013 SC with this silver package but not sure exactly what it includes. as the original invoice just says "silver package" as a $3,500 option. The seller is claiming it is very similar to Autobiography.