Deep engraved colt single action, cal 44-40 Pearl grips

Deep engraved colt single action, cal 44-40 Pearl grips, serial 2181710, 4 3/4 inch barrel with correct two line adress.  gthis is a reverse engraving, where the surounding metal around the cattle brand engraving is removed.  These markings are cattlebrands of famous Texas ranches. Overall dark brown, works excellent, bore has light rifling but still an excellent shooter,  The original pearl grips are of the period , the left one is missing a sliver on the bottom. 
This deep cut out engraving is rare and very expensive, rarely seen.