Uniform Stealing Board

A female sales clerk is replaced by an evil robot double.

The impostor is seen at 2:20. The real saleslady is discovered bound and gagged at 3:05.

https://www.youtube.com/watch?v=zjxSOhsIb3E

Thanks for that, TP3. Not just for the stealing scene, but for alerting me to that dude's channel.
I'm a huge fan of those old Japanese shows.
The dude with the shades that discovers the woman tied up was in one of the Godzilla movies from the 70's.