Thanks for the link to the National coin piano video in the clip
from the film, "Roxie Hart", included in the Nov. 13 2025 MMDigest.
The video indeed shows a National, but the audio is a recording
of an 88-note player piano.

The highest automatically-played note in a National is C#, and
the piano in the audio plays notes that are in the octave above
that. Also, the arrangement doesn't sound like a typical National
arrangement by one of their staff arrangers.

Here's a detailed history and description of National coin pianos
and rolls:

https://www.mechanicalmusicpress.com/registry/nat_auto/nat_auto.htm 

Art Reblitz
Colorado Springs, Colorado