38 s7w, Welcome tot the Forum. Interesting gun and holster. I would agree with Mr. Wilson that around 1889 is a good estimate on the manufacture date. The holster is a very desirable one for collectors, worth as much as the gun, maybe more. It's called a "Hip Pocket" style, as the rectangular shape is intended for holding the holster firmly upright in your pocket and giving you quick access to your gun. Is there a makers mark on some catalog numbers on the back? It appears to be lined, perhaps with chamois skin, which is probably why (if the gun was kept in the holster for years) there's any nickel left on the finish. Normally tannic acid in the leather of most holsters will destroy finishes over time, if the gun is left in the holster. Good luck on your search for Miss lillian! Ed SWCA #15