the photo is of my great grandfather Rowland B White with a group of men, he is holding the sign, and to my mind appears to be a junior member of the gathering, particularly the front row. The sign is not visible on the original and my attempts to enhance have improved the photo but not the sign. I have other photos of my great granddad and this compares with his appearance circa 1909. So could be plus or minus a few years. By 1919 he definitely looks older. The picture maybe SW London Clapham or Earsfield if prior to 1905 and or North Finchley if after 1905. He was a butcher by trade during this time.
Any assistance appreciated.
I have posted an enhanced a copy of the photo taken of the original which is held by my aunt and was inherited from her father the son of the Rowland B White but nothing is visible of the sign