Overall: 1/8 x 3/8 x 1 1/2 in. ( 0.3 x 1 x 3.8 cm )
written: on envelope containing key: "Key from Joshua Brookes House, NY, c. 1820"
stamped: on key: "82"
Flat steel key with one straight edge and one serrated edge, coming to a point; circular loop at opposite end with string attached.
Due to ongoing research, information about this object is subject to change.