PERFECT fall/winter piece!  This is a Victorian necklace circa 1870,  designed as a full bookchain collar of sixty-one acorns that fan around the neck when worn.  It is really special and a hard-to-find style, though acorns were a very popular motif during the Victorian period as the oak was a symbol of strength.

Measures 17" length and 9/16" width.  Not stamped or signed, but acid-tested for silver content.