Exodus 38:2

He made horns for it on its four corners . Its horns were of one piece with it , and he overlaid it with bronze .

They made a horn at each of the four corners, so that the horns and the altar were of one piece, and they overlaid the altar with bronze.

And he made the horns thereof on the four corners of it; the horns thereof were of the same: and he overlaid it with brass.