the first references to the "pro 3 attaches" crankset that ive found are in the late 60s - around 1969 is the first advertisement for them i have in my material. could be slightly earlier than that, though.
the chainrings are still available either through ta or can be found used with not too much trouble.
im not sure when they stopped using the blanking caps on the back of the pedal threads, though - i wouldnt be surprised if it were pretty soon after introduction, cause they tend to get punched out if youre not careful, and dont seem to serve any real purpose...
-joel
>Amongst Mr Stones booty is this crankset...
>
> http://ebay.com/
>
>How early are these and can one still find chainrings to fit? I ask because
>I was offered a Mercier on the weekend with the same cranks but it had been
>well used.
>
>TIA
>
>Warren Young
>Toronto
>_______________________________________________
--
joel metz : magpie@messengers.org : http://www.blackbirdsf.org/
bike messengers worldwide : ifbma : http://www.messengers.org/
po box 191443 san francisco ca 94119-1443 usa
==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...