The plane is listed as a DC-4M-2 North Star on the Canadair North Star Wikipedia page. But I suspect you guys have more expertise than most Wikipedia editors! Here's a quote from the page:
"BOAC ordered 22 DC-4M-4s and named them the "Argonaut class", each aircraft having a classical name beginning with "A". The Argonauts were delivered between March and November 1949; they flew to South America, Africa, the Middle East and the Far East until 1960.
On 1 February 1952 the BOAC Argonaut Atalanta G-ALHK transported Princess Elizabeth and the Duke of Edinburgh to Kenya to begin a Commonwealth tour. Some days later, 6 February, it was again Atalanta G-ALHK which returned the newly acceded Queen Elizabeth II to England upon the death of her father, King George VI."
Would you say that's accurate?
Thanks,
David