I'm only guessing, but I'd say that it's likely that the BB is Raleigh-threaded and the HS is standard. It looks like a great candidate for a tourist! Hope somebody who has experience can advise whether there's a work-around for a Raleigh BB that DOESN'T involve re-tapping or an unthreaded BB unit...maybe a Sugino spindle that will work with the Raleigh cups? (ala the "French fix"?)