Antique "STOP" electrical switch

Based on the images provided, Google Gemini identified this as:

" This is a vintage, heavy-duty industrial switch, likely an electromagnetic starter switch or a remote stop switch for a motor.

The internal coils, visible in the fourth image, are the key to its function. This is not a simple on/off button; it's an electromagnetic component (a solenoid or relay) that would have been connected to a larger circuit. When the "STOP" button is pressed, it would de-energize the coils, which in turn would break a larger electrical circuit, shutting down a motor or a piece of machinery.

Its robust, cast-metal body and sealed construction suggest it was designed for use in a tough, industrial environment, such as a factory floor, on a ship, or in a heavy machinery application where it needed to be protected from dust, moisture, or impacts. Given its design and construction style, it likely dates from the early to mid-20th century. Without a specific brand name on the exterior, it's difficult to pinpoint the exact manufacturer."

I don't know if the brass tubes mentioned above are actually coils - the just look like tubes to me. The heavily spring loaded button is attached to the brass washer between them and when you press it in it breaks a circuit between them.

I'm not certain, but from memory this was mounted next to a large electrical motor from the 1920-30's which was installed to power all the machinery in a flour mill (via a series of large pulleys and leather belts which transferred the power to multiple machines).