Vintage pin badge issued by the IDMA (The International Dancing Masters' Association) in the late 1950s or early 1960s, before they merged with the Dance Teachers' Association to become IDTA. The badge is about three-quarters of an inch tall. It is old, and does NOT have a safety clasp, so it is not suitable for children.
The writing on the back is hard to read, but I think it says HUGHES (presumably short for R.A. Hughes, a 1950s medal maker).
Condition: Vintage badge, in fairly good condition, but with a small chip in the white enamel between the M and the A. It comes in its original presentation box, which is scuffed but in good condition for its age.