Hi John,

Thank you for contacting Mearto with your appraisal inquiry.
John Prosser (about 1796-1837) was appointed Sword Cutler and Belt Maker to King George III in 1795 and to George IV in 1827. His workshop, located on Charing Cross (at #9 from 1796 to 1853; he was at #37 Charing Cross 1854 to 1860), produced high-quality swords and edged weapons, gaining a reputation for craftsmanship and excellence. Prosser's swords were sought after by military officers and collectors alike. The elaborate "V" in the hilt indicates this was made during Queen Victoria's reign; combining her coronation date of 1838 and the dates Prosser was at 9 Charing Cross Road, we can definitely establish this sword was made between 1838 and 1853.
Recent Prosser dress swords that have been offered at auction tend to sell for prices ranging from $1,000-1,500, though those that bring towards the higher end of that range all have scabbards/sheaths.
Based on the photos and information provided, and subject to examination, this is:

An antique Victorian Prosser dress sword
English, made by John Prosser, 9 Charing Cross Road, 1838-1853
The hilt with stylized lion's head pommel, wrapped shagreen (sharkskin) grip and curved and pierced brass or gilt metal knuckle guard, the cross guard with crowned "V" with oak leaves, the curved fullered blade with ricasso engraved "PROSSER / to the Royal Family / 9 / Charing Cross / London." Lacking scabbard.
36 inches long overall
CONDITION: This sword appears to be in good condition. Lacking scabbard.
PROVENANCE: Inherited
$800-1,200*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, or questions/concerns, and thank you again for using Mearto.
~ Delia