Bet these are rare....

I did a little research - I asked a NEKAF-Expert....

'Production in Rotterdam was only for BeNeLux and EU 'Region 1', (France, Germany, Switzerland, Austria, Italy, Sweden, Norway, Denmark) not for UK.
RHD Cars for Uk were built in the USA - they got a Valiant dash - code was 1967-68 680 and 1969-1971 X15.'

These cars have a full length VIN - Rotterdam cars have only a shortened VIN