Vintage Campagnolo Chainring 52T 151 BCD Road Bike Chainwheel Italy Track Race. This one might be NOS with shelf wear. Highly sought-after’PATENT CAMPAGNOLO’ marked model. 52 tooth (52T) outer chainring, marked “52” on the ring. Made from lightweight aluminum alloy – weighs approximately 140 grams as shown. Correct for some vintage Campagnolo Super Record and Nuovo Record setups from the 1970s and 1980s. Made in Italy – classic Campagnolo quality and engineering. See detailed photos for condition and bolt pattern details – authentic original piece.