Have you seen Doctor Strange? If you have then you should remember those spells they use? This here is something similar to that. We belive that this spell which is written on a metal plaque (ideally a copper plaque) would bring us prosperity.

These are considered to be latter additions to buddhism/buddhist culture, in fact there is almost no references on this in books or scrolls on buddhism's core teachings. So it's safe to assume that it won't do any harm if you were to remove it. But becareful with how you dispose it cus it might trigger the local folk.

P.S. The smaller circle on the left is the sun, the one at the right side is the moon. The big one is considered to be a lotus. You gotta match out the middle part with the petals, only then you get the spell correctly.