I've had this little 5'4 screw boxed twin fin with no dimensions in the foam, just Rusty's signature on the stringer. I'd love to learn its history/rarity and possibly it's value as I am in desperate need of a new quiver. I've held it tight since I got it when I was 8, and I've avoided riding it simply cause it has Rusty's name on it. Please fill me in if you can