Multi Moving Motivation Matchbox Monday MB 5 London Bus 1957-1960

I thought this would be an easy one until I tried to figure out if this is a MB5a or MB 5b. Sadly it turned out to be the 5b . The differnece is the cab sticks out further in the a version and the decal is slightly different. There were a total of 4 of the AEC Routemaster aka the London Bus. Each version gets larger and more detailed. The final version had an interior. But there was no version without a top as seen on music videos.
Next week back to BP wreck trucks.