One suggestion had been that in Tales of Suspense #39 at his origin Tony Stark was 23 years old. That would make his Birth date at 1940 in the Atlas era. But does anybody have a reference to Tony’s date of birth? I know Marvel have updated the MU to start in 2000AD recently, but I am more trying to track down his birth in regards to the opening of the Marvel characters around the emergence of the Fantastic Four in 1961.