Answer:
Two people are born at the same moment, but they don't have the same birthdays. How could this be?
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Each of these ends in a kettle full of precious metal and the double variety is quite awesome
Be sure to shout for its answers are weak, but there is no language it cannot speak.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?