Well spotted it is indeed an NSU Ro 80.
When NSU was bought by VW this car was fitted with a piston engine and called the K70, the first watercooled VW.
Made in Gt Britain
CORGI JUNIORS
WHIZZWHEELS
N.S.U. RO 80
Pat App 3396/69
I think the date is 1969 from the patent number.
Pete
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