Russwin skeleton lock offers w/ crystal knobs.

Product Name: Russwin skeleton lock offers w/ crystal knobs.
I haven't cleaned, nor restored to keep it's antiquety value. The manufacturing date is hard to pin down exactly. The same design was offers used from 1804-1934, and each lock was keyed to a number,which corresponds to the right skeleton key (#s 1-4). This mortise lock is keyed to the #1 skeleton key. Sadly I do not possess the key, however a #1 skeleton key for this lock can be purchased on Ebay. The lock is complete with all components as pictured. Crystal hex cut door knobs. The tarnish can be removed if you wish, though that greatly affects the value of such a piece.