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1 comments
It's a 9 or 10 speed Record (or late model 10 speed Chorus). The difference between 9 and 10 is a fraction shaved off the back of the big ring so the rings are slightly closer.
They're 135bcd . Plenty of aftermarket rings available, including Stronglight. Make sure it says it's for a Record chainset, as the bolt hole for behind the crank arm is countersunk the opposite side to the rest.
Some still available NOS, eg
http://new.sdeals.com/index.php/fr/home/chainsets/chainsets/product/1334...