a bent brass key

The key shifts in colour of brass and green. It has a long and slightly curved shaft, and a circular head through which a thin string has been threaded.

It is a bent brass key.
It weighs about one pound.

You identify a bent brass key.
It is an unsellable key.
It weighs one pound and two ounces, and it is worth about ten copper.
Its keywords are key, brass, bent, brasskey, brass-key, and bent-key.