Probably an Iver Johnson solid frame. Plating is nickle.
Spray it with Break Free, clean it carefully, and see if it indexes and functions well.
BE CAREFUL OF THE GRIPS - they wre hard rubber and break very easily and are difficult to find.
They were made from the 1880's till well after WWI, names like "Young American"," BlueJacket", Defender", etc.
Parts used to be available from
www.gunpartscorp.comIver Johnson info and possible date available at
www.armscollectors.com/faq.htmfollow the trail for Iver Johnson and H&R. A very informative and athoritative site.
These guns were sometimes used hard and put away wet - many are not in good condition, but they are interesting little guns. Ordinary people all over the US carried them and used them for home protection, and many are still shooters. Have it checked before shooting it.
I'd keep it - there is not much collector value, but they are the firearms of the everyday American of a hundred years ago.
Sorry, but I'm kind of a fan of these old guns and I do go on.
Mark