Hello,
The U.S serial number in full was 42-64383.
Apparently it was destined for the RAF in India.
If the Airman's name was Blunt, he was involved in Anson II, 7469 accident on the 24th March and died on the 31st.
If another airman then the name would perhaps be helpful.
Alex
From the Facebook page.
https://scontent-lhr3-1.xx.fbcdn.net...08&oe=5A4E3489