Did I tell you about the blue skies and the warm breeze and the bright sun ? The birds whistling happy tunes ? I told you before: Road signs may bring you the happiest hours in your life (from Start your own collection).

A complete new design : a man using a pick-axe. All other finds feature men working with a spade, a shovel, or their bare hands. Would that mean that a foreman, having both versions in his truck, chooses the warning sign to fit the work at hand ? He probably just takes the one that lies on top.