It is a trunk lock made by Conrad Liebrich in the early 1800's. Here is a brief history of Conrad Liebrich and his company:
Star Lock Works in Philadelphia made a variety of nice brass trunk locks for trunk makers. They didn't actually make the trunks, but they made really nice trunk locks. They were founded in 1836 by Mr. Liebrich and originally the locks were marked with C. Liebrich, Phila. and then in 1869 he retired and two partners, Hillebrand and Wolf took over the company and called it Star Lock Works. They made trunk locks and stays, keys, padlocks, latches and springs. An early trade card advertising Star Lock Works was shown in the Bicentenial exhibit for Philadelphia in 1976. I think they finally went out of business in the very late 1800s. This is a good question because many people think that the name on the lock would be the trunk maker, when in fact this is rarely the case. There were several large lock companies that made most of the trunk locks, including Eagle, Star, Yale, and Corbin. Many of the locks do have a patent date on them and that can help estimate the age of the trunk, but won't tell you who made it.