This is a N. Pomeroy Clock, a nice example of a late 19th century American shelf clock out of Bristol, Connecticut.
N. Pomeroy (Bristol Conn) Eight day Shelf Clock. 1880’s.
I don’t know much about this manufacturer, I haven’t seen any other N. Pomeroy clocks at auction.
American Clock and Watch Museum
A mecca for American clock enthusiasts, Bristol, Connecticut, is the home of the American Clock and Watch Museum. Clock museums, obviously, are one of our favorite destinations, but this one is a particular treasure, but more particularly of note, he museum has a vast archive and can help you determine the origin of your favorite vintage or antique clock.
I have a similar clock, inherited from my parents, but not in as good a condition as yours. In my case, the wood is rosewood veneer, and the painting on glass surrounded by black is of a bird.