Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Shell Oil Dispenser/Lubester/Bennet Pump ?

I have a Shell oil Lubester, with a Bennet model 457 pump serial number MA 21473, I’m trying to find info on the year/era it was made.I would like to make it period correct colors and decals, I’m guessing 1930s…anyone have any information it would be much appreciated, see attached pictures