Pre-Vedic
First swastika was carved ino the underside of a bird figurine somewhere in what is now Russia, roughly 6000BC.
I'll look for a cite or site, my stuff is sort of packed away.
Actually, I stick to the dates in the Vedas themselves. Did you know that one of the Vedic sages (was it Atri?) descibed a stellar event which I cannot for the life of me remember, which computers have now figured out happened 26,000 years ago?