3c Rose Pink (64b).
Horizontal pair, bright color, tied by "New-York Jan. 2?" double-circle datestamp and target on cover with "Costar's Vermin Exterminators" corner card with illustration of a large rat,
to Roxbury Mass., slightly reduced at right, fresh and Very Fine, rare design, paired with the previous two lots, the three covers form the Mother, Daughter and Twins Rat Family (the father went off to start another family)
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