C19th Sword, blade marked Hones & Co? Regent Street London with crown, 15th Kings Hussars, mameluke

C19th Sword, blade marked Hones & Co? Regent Street London with crown, 15th King`s Hussars, mameluke with shagreen & engraved brass mounted scabbard, carved ivory grip with brass cross hand guard, engraved & cast with shells & leaves, flambe terminals, possibly for Equerry or ADC