Where to sell??

[1869Chalice]

We have a chalice / Goblet some sort of metal brass/copper/silver?? it is engraved around the top "Presented to Dr.Clark for his Kind services. The Marchioness of Hastings. 1869. with a hallmark stamping. It is in a leather case and we have a history and information on the Marchioness the Marquess and Dr. Sir Andrew Clark. The coblet was made by I.W. & F.B. Thomas sliversmiths. I dont know who to approach or what to think in terms of its possible value.