This vintage photograph is difficult to categorize. It looks like a cabinet card image and is mounted on stiff board cabinet card paper. However, the reverse of the image has divided postcard printing including a stamp box. The three children, in this photograph are adorable despite their serious expressions. It is extremely likely that they are siblings. Note how the oldest child has a good grip on her little brother’s shoulders in a show of physical support and affection. The children are wearing nice but not fancy clothing. The little boy is standing on a three wheel scooter. Both girls are wearing necklaces with a charm as well as hair bows. The photograph was taken at the Julio D. Derrey studio. Printed advertising on the verso indicates that the studio was located in Valencia, Spain’s third to largest city.
THE CABINET CARD GALLERY 
Interesting stuff! Seems like an enterprising studio offering customers the “postcard” option without changing their standard (and perhaps preferred) cabinet card format!
Three kids…two first names (and a last name?). Wonder who was left out?