. Does anybody know if this is a good insulator? The embossing is hard to read on the picture. It reads:
W. Brookfied (error? Supposed to be W. Brookfield?)
55 Fulton st.
N.Y.
Other side is embossed:
CAUYETS
PAT
JULY 25 1865
PAT JAN 25 1870
PAT FEB 22 1870