Can someone tell me more about this model of Roadmaster? Registration book says that it is a Buick Roadmaster Majestic Sedan, 5-passengers, 140 hp, 2100 kg and production number is 3400986. I haven't been able to find any similar photos of Roadmaster as this car is. Notice the chrome moulding bending downwards in the back. In all of the Buick pictures I have seen the moulding goes a straight line. See attachement.