It's just the Fender Vintage '62 RI Jaguar pickguard, available at many stores here in the US, and there's probably some on Ebay as well.
I get most of my parts from http://www.darrenriley.com, who is one of the biggest parts dealers in the region, and who just happens to be local, so if I really need something quickly, I can just drive over there and get it the same day. He has just about any Fender part you might need (except for CP bridges 😉 ), and even keeps things like Jaguar/Jazzmaster pickups and such in stock at all times. He's a really nice guy and will even measure the pickups' output DC values for you right there in the store.
For people like me who like to work on/modify Fender guitars, the place is like Fender parts heaven.
😀