. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . if any person wilfully pull down, deface, or destroy any such. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . milestone, he shall forfeit a sum not exceeding level 1 on the standard scale for every such offence.