OP, if you are thinking of this for an actual playable saxophone, forget it. If you want an interesting wall-hanger, go for it.
Helpful hints to all:
If you find an "old" saxophone and you can't tell what the name is, or when you look it up on the internet there's nothing - it is NOT a previously unknown fabulous instrument. If the name is just one or two letters away from a famous name - "Helmer", "Busfet", etc. - NO, it's not a rare engraving mistake. If all the saxophone retailers are selling ones like it for $3000 and this one's price is $300, NO, it's not the deal of a lifetime.