Hello, and thank you for your question.
In today's market, the value of fine sets of sterling flatware such as yours is tied to the price of silver. The price of the metal has escalated considerably in the last few years, driving the price-points of sets like yours ever upward. At present, with silver at about $35 per troy ounce, your set of roughly (+/-) 75 troy ounces would have an estimated value in the range of $2,500. To be sure of its actual weight, you might take it to a jeweler and have it weighed on a scale that measures in troy ounces. You would then multiply that weight by .925 (sterling) and that number by the price of silver at the time. (FYI: The price of the metal may go up [or down] in the weeks and months ahead, so be sure to know what it is at the time you decide to sell in order to get a good price.)
(Hoping the answer has provided assistance, please click ACCEPT. This simply prompts JA to extend compensation for my service. There is NO additional charge for doing so.)
Thank you, again.
Thank you for the added info regarding the weight. In that case, your set would indeed value considerably higher. At approx. 145 troy ounces (I've done the math), it would be in the range of closer to $5,000. There could be a premium associated with it as well for its quality and pattern, but with the price of the metal so high, it is the intrinsic value that supersedes that of the decorative, for the most part. A retail price, then, of about $6,000 for a vintage set such as yours might be appropriate at this time.
Certainly hoping this has helped further,