Just
Machine Doubling on the date. A very common example. The machine must have been ready to fall apart when striking these:


On a doubled die, the devices will show a spread and also contour on both hubbings of the die on the devices.
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Not showing a flattened area. The sing of the dies alters the devices on the outside edge of the devices, in any direction, sometimes two directions if the machine moves that much. Also note on the images the push is like moved snow. It accumulates at the end of the movement direction. (Note the images again)
Edited by coop
08/29/2020 12:14 pm