I call it "antique" as a descriptive term, but do not know the actual age of this desk. My wife bought it to use as a reading/studying area for our daughter in kindergarten, but she's now outgrown it.
The desk top flips up and looks like it used to have a piece of trim to rest a chalkboard or notebook on. There's also a 5 1/2" tall shelf under the seat.
Overall dimensions are 31" deep, 23" wide, and 29" high (top of desk). The seat is 17" from the floor. The desk is approximately sized for preschool through third grade.