They should both work and the SL has little holes in the outer plates and look oh so cool. Steven Willis 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com
> Greetings:
>
> A chain question! What are the differences between the Regina
Superleggera
> chain and the Regina Extra "Oro" - when did they appear? Are they both
> identical spacing? Both correct for a classic Nuovo Record crank and 5
> speed Regina 'gold' cog?
>
> Thanks!
>
> Greg Arnold nyc