Other major duh - the decal is wrong for late 64. Even if it squeaked through with a spaghetti, it should have all the patent numbers.
Unless it was a 50s P bass, owned by Buck Owens, and sent back to the factory for a replaced spiffy maple board without ruts and ugliness. Not Buck's bass player - Buck himself! The board was ground off and replaced by fresh maple, then they stamped the Oct 64 stamp. Fender refinished the butt end of the neck, but the 50s decal stayed! The body was refinished too!
I should open a big buck intraweb vintage guitar place, and show up at vintage shows with a dyed-hair perm and wearing black to buy strats.