Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Help identifying photograph

Hi all,

My father has a long history of collecting Mobilgas that started with his grandfsther and then himself working as a delivery driver in Southern California in the 50s. A friend of his gave him the attached photograph 30 years ago and has never been able to find any information on the torture test. I am hoping someone here can help with that.