The picture shows a view of this Old Children Photograph With Eatwell Mackerel Advertising Case Box. The photograph is not dated but believed to be from the 1930s or 1940s. It appears that the children are using the case box as a table to eat their lunch. The box is marked as follows:
ASK FOR EATWELL BRAND CALIFORNIA MACKEREL NRA (logo)
The photo measures 3-1/2'' x 2-1/2'' and is in near mint condition as pictured.