vintage antique tooth bite dental model mold metal orthodontics dentistry

Description

These teeth look kind of real. But they feel kind of waxy. I think they are a realistic model of a case study or for practice for an orthodontist or dentist.
Please notice that a number of the teeth are chipped.
Two chips are included.
Estate find. I think these dates to midcentury but I'm not sure.
I don't see any identifying marks. I think the tape has the faint remnants of writing on it but I can't make anything out.
I ship every business day,
Thanks for looking.