Will be a version, "special" slightly more hurt lines, closer to the original line of engraving, with the colors not necessarily flat (some effect of brush stroke) and what is the aged, without so much rust by remains of carbono or the greasiness of the single contact by the hands, something cleaner in touch by dirty hands.
I still have some in a larger size 15.5 X 7cm, more suitable for use in family constellations,
only the 22, in the first version line. But the paper is "soft" to be cards of larger size.