Elgin Watch Co key set Keystone Case machined engraved pocket watch w/ chain

Lovely antique key set ( by number check) pocket watch, by number check on interior, it is thought to be from around 1874 ( Pocket Watch database check). Model 1, grade 13, 11j, 18s. Machined and engraved Keystone / J. Boss hunting case with number 4422910 and 4422908, thought to be gold filled. Appears to have engraved initials on front. Comes with detachable pocket watch chain - gold plated - and a moss agate or dendritic quartz? Movement marked Elgin Natl. Watch Co / Elgin Ill / 397053 Has been wound, observed running. Key set function has not been tested and crystal has NOT been opened. Please note: running does not imply time-keeping, full functionality, or continuous working conditions. Watch has not been cleaned, serviced or in any way altered. Sold as is. *** Reach out with any questions. Thanks for popping in! Pre-owned antique item with associated use and wear. Case, watch, chain all show signs of wear, scratching, scuffing, loss of finish. Some small dents may be present. The stone has scratching chipping, small missing spots, edge damage. Edge appears to have a small area of damage - may be a broken lever, however, the watch is thought to be Key set. ***