Hi all, I'll jump on to Camerons account to answer as you are asking. No, that is not the last car to leave the factory, with the under tank heater but raised side lips it's second phase of production, probably Berlin not Lubeck, I'd guess 1966. It might be even earlier, the red trim was a 1964 World Trades fair thing - but that could have been changed during restore. The last factory cars were almost 2 years later and stayed in Europe originally but there are 1 or 2 now in the States. A good sign of a late car is steering lock on the column and DWM badge on dash. A few of the last factory cars also had 2 levers for the props so they could be controlled individually.
Will always be debate to decide what was the last factory car as some were unfinished when the factory closed (late 1967 in to 1968), a few were assembled from parts in to the 1970s.
The really special Amphicars I reckon are the unrestored ones with original paint, there are a few about, and there are some tucked away that have never been in water !
The first Amphicar is easier, it survives in Sweden and is in use, Austin engine, brass props.
David Chapman