i too have seen these - basically, they look like the ref:1500 "criterium" crankarms with the teatdrop spindle and allen-key "cotter", but with a square taper.
see:
http://www.blackbirdsf.org/
-joel
> I could not enhance Brett's Anquetil picture enough to prove to my
>satisfaction that those are aluminum TA arms.The likely truth is
>Stronglight Competition steel.The Italians used Magistroni 5vis with
>TA rings through the 50's.On the other hand,the oldest TA aluminum
>5vis I've ever held in my hand had the"old logo"up by the fixing
>bolt,and a deep,rounded flute along the crank face with no black
>label.Do we have any other sightings of these?
> Seth Finkelstein,Santa Cruz,CA
>
>_______________________________________________
--
joel metz : magpie@blackbirdsf.org : http://www.blackbirdsf.org/
bike messengers worldwide : ifbma : http://www.messengers.org/
==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...