Brake drum question

charger426, Can't say if the name is correct but always been called "Bell" drums.A bodies with 1 3/4''x10'' rear drums.Just a guess about mid 60's to mid 70's.I do know that they also came in 9''. Found a few at Pic-a-Part from a Dart and thought "Score" but found they were 9'' when I got them home.
The 10'' go for a good price used. I paid $75 for one.