According to the April 1965 BOAC Review, the cocktail was created by The Berkeley Room, a bar on New York’s West 44th St, in anticipation of the Super VC10’s debut between London and New York on 1 April 1965.
Co-incidently we dished out a few copies of the ingredients - along with a pic of a young lady sampling said cocktail - at last week's RAeS VickTen get-together at Brooklands. Sadly the clubhouse bar wasn't able to rustle one up for us though...