I have a set of Shimano 600 Arabesque crank arms (no rings) in a bit funny not-quote-silver anodized color (slightly goldish, not the standard color). They have self-extractors included. Tapers are fine. The pedal threads are a bit munged at the pedal side but I am able to screw pedals in and I think they may work ok. I have no idea of the history, I picked them up at a swap meet a few years ago. Yours for the cost of shipping.

EDIT: CLAIMED

Karl