A 1939 Lucas catalog has no SF80 trafficator. However, it shows that MMM cars used the SF28A model, partnumber 531.715 or 531.716 with 8-1/2” arms, partnumber 530.137.
On the theme of traficators, were all P Type fitted with Traficators as standard or were they an extra fitment? I’ve seen some old photos of cars without but wonder were they simply deleted with a panel change ?
Jon As far as I am aware, all P-types were fitted with Trafficators from the factory. They are listed in the standard equipment section of the parts book. It is not impossible that someone made a special order for a car without them but more likely they were removed by an owner for some reason. Nick