I would hazard a guess that the front-USMA- stands for United States Military Academy. Doherty's Patent is the makers mark.
isn't red brass red !
you will have to do research in the US Patent Office
A Brass Button - 1911 was released on: USA: 1 February 1911
The cast of A Brass Button - 1911 includes: Marion Leonard
It is a conductor
Grass as it is the only one not made of metal.
Huck and Jim found a quart of whiskey and a brass clock in the stomach of the catfish.
It is hot and you can turn on and off a light bulb by screwing clockwise or counterclockwise.
Coronopofilia is a perrennial plant. Common in California, it's called "brass button" and kind of looks like a marigold.
It depends on the make of the tractor. Modern tractors are usually started by the turning of an ignition key - as with a car. I once drove an old Ferguson tractor that had a brass button that had to be pushed in with my heel, while moving the gear lever into a slot marked start. Unless the brass button was pushed in, the gear lever couldn't enter the start slot!
Brass. If you want to be exact, low brass.
The trombone is classified as: low brass, and or brass.