Again, all credit goes to Patrick whom sent me all these pictures. I don't think he saw this was a two-stroke model tho, but all is forgiven. ;-) I think this is a Honda PA50, but to be honest, i'm currently too tired to look it up for you. Fine. This is a Honda Express or a Honda NC50. A 49cc moped that has been manufactured between 1977 and 1983. This one here has a kickstarter, so it is a version from 1980 onwards. The saddle is a nice two-colour classic model, so it might have been transferred from an older model.
I have not been able to figure out who the model is, but this image was for the magazine LIFE so perhaps I will find things out at a later point.