Roll of pre-printed stamp label stock and method of manufacturing a roll of pre-printed stamp label stock

A roll of pre-printed stamp label stock comprising:

• a core having a core wall thickness between ⅛th inch to 3/16th inch, wherein the core is solid plastic;
• and
• a web of material having a longitudinally-extending axis and wound on the core along the axis, the web including (i) a release liner having a front major side surface and a back major side surface opposite the front major side surface, (ii) a longitudinally-extending series of pre-printed stamp label panels disposed on the front major side surface along the axis and separated apart from each other by transversely-extending gaps between each pair of panels, each panel including a plurality of adjoining individual pre-printed stamp labels associated therewith and separated from each other by die cuts, (iii) a longitudinally-extending first series of sense marks disposed on the back major side surface along the axis and located on the back major side surface opposite at least some of the transversely-extending gaps on the front major side surface to enable a cutter to transversely cut the web at a location on or adjacent to a sense mark of the first series of sense marks and thereby ensure the web is cut transversely only through a transversely-extending gap and not a stamp label panel on the front major side surface of the web, and (iv) a longitudinally-extending second series of sense marks disposed on the back major side surface along the axis and disposed between pairs of the first series of sense marks, wherein the first series and the second series of sense marks are disposed with black-water based ink with rubine toner on the back major surface, and wherein individual stamps are printed on each stamp label panel each stamp has a strip on one side of that stamp that is printed in:
• a phosphorescent orange ink as a particular security feature for each individual stamp having vertical placement along an edge of the one side away from the corresponding pre-printed stamp label in a width of approximately 1/16 of an inch and a minimum fluorescent emission intensity of 30 to 50 phosphor meter units (PMU), and wherein each stamp includes horizontal and vertical die ties.