I have a few unused NOS French made alloy chainrings for sale to fit old Campag 5 pin standard in 43 tooth and 42 teeth inners for Stronglight 49D. There is also an odd 40 teeth ring with a slightly smaller BCD than the Stronglight? These have Made in France on them with a tiny oval. $20.00 each includes postage. Please contact off list
Best wishes and be lucky. Michael Butler Huntingdon UK.