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Most likely not a genuine pre-'Dolan'-brand Cougar, but the eBay account selling belongs to Julie Dolan, so it's as 'genuine' a modern Cougar as you're going to be able to find.
Maybe it's a batch of frames fabricated or bought-in, originally intended for use by a team or trade customer, and now being badged as 'Cougar' to avoid confusion with the current, much more well known range of Dolan track frames? Still, just speculation.
Is it a genuine Cougar? Seller is listing another apparently 58cm version that looks exactly the same?!
edit: and 49 and 50cm versions listed too.