Onionskin paper......extremely thin but stiff and snaps back quickly with a distinctive sound during a flex test. It's sound is a higher pitch and sharper than most stamp papers.
Printing is done in reverse on the back with gum applied over the printing. Used stamps should be left on cover/piece because the ink will be lost if soaked. Stamps on onionskin paper need to be handled carefully.....printing is prone to flaking off.
Scott US Essay #79-EBa.....printed in 1867 by Henry Lowenberg.
Front with black background.

Back with black background.

Front with back lighting.

Back in wm fluid.

Front with white background.

At about 10x.

At 100x.
