I think these had triple butted frame tubes afaik. looks like a 52cm c-t/small.
https://www.ebay.co.uk/itm/18603620...4Q6Y%2BcAa0RbuwGY%3D|ampid:PL_CLK|clp:4429486
https://www.ebay.co.uk/itm/18603620...4Q6Y%2BcAa0RbuwGY%3D|ampid:PL_CLK|clp:4429486
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