1978' Bentley T2 Lwb

I believe this car is one of only 10 built, and only three or two of these were RHD. None of these appears to have been for sale for some time --how do you put a price on such a rare car? I think I am being reasonable.
The car was supplied to its first owner Sir W S Atkins in January 1978.
Has documentation and service history.
Mileage now 140,000miles
In 1987 it was imported to NZ.
Little mechanical history and runs very well.
The car is very tidy inside and out, everything works except air con at the moment.(have replacement compresser)
Paint is original with some small blemishes and stone chips, shines up nicely.
Interior good plus, but the varnish is lifting on the dash. Lambskin carpets cover new looking original carpet.
My wife and children absolutely love this old Crewe product but I need to sell as I have too many vehicles and too few summers to go to finish all projects I have acquired.
I can make available to any agent you wish to inspect, and also arrange for shipping back to UK.
Price is NZ$30k (so you can calc. actual asking price based on exchange rate.)