I got one from my dealer, too, a few months after I took delivery of my 911S. They are quite nice.

For those that didn't get one (some dealers throw them in as part of the sale), you can order one from Porsche Cars of North America (if you're in the US or Canada - don't know if Mexico is covered by PCNA) for about $25. They don't send it in a frame any more, as the glass and frame often were broken during the delivery process.

I went to a local frame shop and picked out an appropriate frame plus had the shop put a preservative on the paper to prevent any yellowing or other deterioration. It's worth it.

Jim