If the condition is acceptable to you then buy it. There were only 1,386 of these produced. I have a one and a factory letter indicating the number produced.
Here is a photo of the 4576 I picked up back in 2007.
The pistol above it is my 4566. I personally picked out for a close friend of mine to purchase new (original owner). He later traded it to my brother in the late 1990s. My Bro then traded it to me in 2006. Although it's been around a bit, it's always been close to me.