Don't see a reason it would be fake unless non-autoed versions of those cards got out (which is possible); just compare it to some of kobe's other autos from that time period and make an informed decision.
It is ebay though, place is full of fakes - and frankly, they don't give two sh*ts!
yeah his old school autos from scoreboard and a couple of other brands have been found to be fake quite a bit so i myself stay clear of them. Could be legit but u still find quite a few of his scoreboard autos from around the same year sell for under $80-100 simply cos people are sus on them.