I’m not sure exactly what the imposing controls were used for (I can’t make out the abbreviation on the back, though the date, city and name of the family — Schepler — are clear). I assume, in any case, that the boy was quite pleased with himself when he saw this.
I often find it intriguing when there is a person in the background who is captured (usually) by chance – such as the young girl tucked away near the corner of the house, looking towards the camera (which you can make out more clearly when you enlarge the image).
A boy, a bird, and an open door – as well as, presumably, a mother overseeing things to the left. Oddly, in the many shots in which he appears in the photo album from which this was taken the youngster is always identified as “Boy,” while the little bird has a name.