Its a beautiful fishbone. It seems like you have the original asa, front and backblock to boot.
I have one in purple acidwash and it has the same "half milled" style. It should eliminate most of the lower tube woes that come with a fishbone. Enjoy it!
Tell me why I had to be a powerslave.
I don't wanna die, I'm a god, why can't I live on?
When the Life Giver dies, all around is laid waste.
And in my last hour,
I'm a slave to the power of death.