American Balance of the mid-nineteenth century. the name of the maker is blurred, however, Philadelphia can be deciphered as the place of manufacture. "American Copper and Brass" H.J. Kauffman, page 233.
Note on back of photo: Untouched brass castings as they were taken out of the sand. Hours of work were required to make the key useable in a lock. The other object is a keeper for a brass cased lock.
An iron lock, made and signed by a famous locksmoth Rohrer, who worked in Lebanon County early in the nineteenth century. The grip of the lock was released by turning the key.