Macbook screen

Hi guys

I have a macbook, and the screen accidentally broken and after repairing it a red sign appear in the left corner and when I asked the repairer he told me this sign mean that the screen is genuine
I want to ask you is it true, because I don't believe him

Is it a removable tag or does it appear on the display each time you turn the machine on? If it appears on the screen each time, take it back and tell him to replace the screen again. He's not telling you the truth.

Thanks chscag

yah it's a removable tag and another repairer removed it