#66432
quote ImpBarn:

That’s a number I have not seen quoted. There were Harrington conversions of Series 3 cars, which will need to be taken into account. I wonder if the Rootes Archive Trust would have some idea?

Rick at Sunbeam Specialties shared this contact with me; I have since messaged them in hopes they will know the answer:

historycentre@culturecoventry.com.

Thank you