3c Lowenberg Decalcomania, Plate Essays (79-E8-79-E9).
Group mounted on exhibit pages, 33 essays including multiples, nice range of colors and papers, corner margin examples, others showing chemically treated paper turning to blue when moistened, one pair on the scarce linen cloth
(this one alone cost Mr. Drews $500), few typical faults for these, overall Very Fine showing
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