Thanks for the photo advice - much appreciated (hopefully the attached shows things a little better). And for the advice so far.
Samick had been put forward as a suggestion, but the markings confused things a little, Don't think it's a Volcano (that's a 58" rather than 60" I think) but it could be something similar "badged" for a supplier.
Regarding the bracing height, I've strung it with the X-200 string (56") and that isn't right. It braces at 7" and the string lays around the limbs. Takes a lot of twists to get up to 8" and it still isn't properly clear of the limbs. I recon the minimum would be 8 1/2" so perhaps 9" isn't actually that far out.
This shows the "unknown" (top) against the X-200 (bottom).
Ahthough the "literal" tip to tip length is the same, the reflex curve on the "unknown" is much greater, giving probably a 2" "straight line tip to tip" difference (if that makes sense!). The riser is also smaller, giving much longer actual limbs.