It is the buyers responsibility to examine all items to determine if an item is safe for use - the buyer accepts all responsibility for use of items purchased
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A Campagnolo Nuovo record 47 tooth chainring. Patent marking with no pin. It certainly has had some miles on int, but the tooth profile remains rather defined. So it has a lot of life left. A 47 is a handy size; perhaps you are setting up a project single speed. Or perhaps you are setting up a bike where you want to only go as large as a 47 so you can gain an advantage in trying to set up your racing derailleur to accomodate a larger rear cog. See the photos of the ring you will receive.