for what its worth -
the freehub body and rounded-octagonal hole drop-on sprockets are identical to the "tour de france" type j. moyne freewheel.
these freewheels had a 1 or 2 cog stack threaded small cog, which served as a lockring for the other 3 cogs and their accompanying spacers. the idea was that you could then disassemble your freewheel for spoke removal or gear changes, without taking the freewheel body off.
as a freewheel, these hubs have a special set of 2 "wrenches" which slip on over the largest (inner) cog, and lock 2 opposing notches on the portion of the freewheel body on which the cogs stack in parallel to 2 similar notches on the portion of the freewheel body that is threaded on to the hub. once this is done, you can use a chain whip to remove the entire freewheel.
however, peters hub looks different to me - i dont see the removal notches on the back of what appears to me to be a freehub body - and there is a lockring instead of an outer threaded cog "cap".
overall, the moyne tour de france fw is a pretty nifty one, and the octagonal body is an interesting alternative to more typical splines in this application...
-joel
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joel metz : magpie@blackbirdsf.org : http://www.blackbirdsf.org/
bike messengers worldwide : ifbma : http://www.messengers.org/
portland, oregon
==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...