While researching my recently acquired 1892 U.S. Assay Office New York silver ingot, I came across the photo below for sale and could not pass it up. From The Illustrated American, April 22, 1893, a view of Wall Street and The U.S. Assay Office, the first building on the right at No. 30 Wall Street.
The building in the photo was constructed in 1823. By the Act of March 3, 1853, the U.S. Assay Office New York was formed and opened at No 30 Wall Street in 1854. This building served until 1900 when it was replaced.
I find it amazing that the ingot above remains from precisely the time in history captured in the photo below.