Gail, your bottle of Black & White dates from between 1955 and 1965. And just some additional info on the closure being used - it's called a ‘kork’n’seal’ –which is a bit confusing as there’s no cork involved, but this was the brand name of these caps. Black & White phased out the kork ‘n’ seal during the end of the 1960s and early 1970s and began using the screw cap.