Plating

Plating

Perforations are not reliable.

It depended entirely which way the dual sheet started.

However: No perfs in top of sheet can only ever be top plate, no perfs bottom imprint, can only ever be bottom plate

Because most sheets were perfed from top plate, very few imprints show no perfs.

	right side no perf guides (no splodge upper)
an upper plate indicated by splodge, and or perf guide and watermark left is a harrison plate splodge, right is a typical cooke jubline and no splodge == quad plate? splodge might be a harrison invention	COMMONW = upper right
upper plate wmk=POSTAGE
indented monos can only ever be upper plates	upper Australia= upper plate, POSTAGE lower
lwoer plate splodge so far only splodges on left Qaud plates?	clearly kgv wmk

perforations are unreliable. depending on directoion only one edge is not perfed (top upper sheet or bottom lower)

an upper plate imprint must always have perf in gutter

a non perfed gutter can only be a lower plate

similary an non perfed upper can only be upper plate

An upper plate, full sheet

lower, full sheets