"Aunt Gertrude's will left me her bank and gas stocks, real estate, railroad bonds, and city sevens, and gave Harry the clock."The term is a new one for me. When I tried to look it up this morning, the search results were cluttered with rugby references, which would not be relevant to this story. I'm hoping someone reading this blog will have better knowledge of Victorian terminology.
Addendum: This is just classic - two answers within an hour of my post. :.)
per snotty: bonds which pay 7% interest (link goes to an archived page of the NYT).
confirmed by Matt, who used a Google Books search to find links to Cincinnati (and other) city bonds.
Thank you, guys.