Construction, heavy equipment and cranes on Zippo lighters
Rare instances of bilateral engravings, and pictures from different angles are different:
Construction cranes at Zippo common. In the first two-way too lighter engraved: on the face itself tap on the back - tractor, driven by excavator on the trailer.
Prevalent theme of different drilling, both just drilling holes in the ground and oil drilling. The first lighter on the left - one of the earliest instances of the image on the truck Zippo, is 1947.
Zippo lighters board with technical-building subjects are rare, but still, there are:
To compare sizes:
Modern Zippo 2006 GMC truck with the mid-1920s: