If the body was natural, it's had its finish stripped. Still for the price, I'd grab it ASAP. Serial number plate checks out as a USA model, so as long as the original floyd is on it and neck has the ping pong dots you should make out pretty nice even if you don't like it and sell it. Nightswans have an R1 width neck and 24 3/4 scale, so a lot of people get hyped about them then play it in real life and end up hating it.
I'm not sure I'd say I'm a know-everything expert but I've had almost 70 Kramers and still collect them. There's also a Kramer specific forum with a lot of knowledgeable folks if you end up with something weird. Just in case someone else reads this though, there's the Vintage Kramer website, for the love of god please research what you are getting. I'm so damn tired of seeing people pay $1500 for an evh stripe job Striker that is actually worth less than $200...