The Collaborative International Dictionary of English v.0.48:

Assemblance \As*sem"blance\, n. [Cf. OF. assemblance.]
   1. Resemblance; likeness; appearance. [Obs.]
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            Care I for the . . . stature, bulk, and big
            assemblance of a man? Give me the spirit. --Shak.
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   2. An assembling; assemblage. [Obs.]
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            To weete [know] the cause of their assemblance.
                                                  --Spenser.
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