Offset numbering tool, Vertical type 420 C, counting upwards, with 7 digits, font Helvetica (Gotic), with 3 numbering wheels that can be disabled, fontsize 3/16" = 4,76 mm. This unit can be equiped on a variety of offset printing presses, including Heidelberg Speedmaster & GTO.
The lever is not equiped with a spiral spring.
Sold by piece.