I'm not a Reading expert, but HTn quad hoppers would fit the 1924 blt date. A photo of 70455 with a 3-48 reweigh date shows a vertical wheel geared handbrake.  It's a broadside photo, so I can't ID the specific type.

I don't know the history or original configuration of the HTn cars, but in general, composite quad hoppers seem a rather rare thing.
Hope this limited info helps.

Jack Mullen