Any opinions about the value of a pre-64 (1947), Model 70 Supergrade in the 7x57? Condition 96% overall. Thanks.

If original from $3000 - $7500. I know that this is a big range but there are a lot of variables involved. Is it a carbine, is there any proof that it is original? It seems almost all the real rare calibers ie. 7X57, 9X57, 7.65, etc. are starting to show up in Super Grades. I find it odd to me that every one of these calibers is a SG! There are probably more fake 7X57 out there than real. Faking is getting so good that people are now making barrels!

I just sold a nice one for $4500.