Harrison Corrector Disc in original padded case, in original box. "Size No. 2 (v) Color C5". Written in pencil on the box is "Ansco #11)
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Inscribed on the case: "Harrison Duraline" in nice Art Deco lettering. The "#11" on the case is in pencil and easily erased.
The glass filter is an orange shade (appears much redder in photo) and is slightly over an inch in diameter.
Of interest to photography collectors, I would think! $3.