There is a very good chance that it could be valuable depending on the price of silver right now - what you probably should do is take the antique silver cruet to your local diamond dealer and ask for an appraisal of the antique. They should be able to give you a reasonable estimate of the value and then they may even offer to purchase the item from you.
"Antique" in the trade means "over 100 years old." A good place to start would be ebay. Expect to pay a considerable amount for a certified antique with a written provenance, since silver cruets are uncommon - most are glass.
A silver cruet set marked EPNS (Electroplated Nickel Silver) typically does not have significant value, as it is not made from solid silver but rather coated with a thin layer of silver over a nickel base. Such items are often more decorative and of sentimental value rather than high monetary worth. However, the value can vary based on factors like age, condition, and collector interest. For a precise valuation, it's best to consult an antique appraiser or check recent sales of similar items.
Use any good brand of silver polish, and a very soft cloth. It will be impossible to get into all the fine details; don't try to. Rub softly until the cruet is clean. Wash with distilled water, and put in a bag with 3M silver preservative strips.
Silver plated or sterling silver. ?? I'm not even sure which it is. Should there be a mark to indicate sterling silver?
It is called a cruet.
The value of a vinegar cruet depends on what type it is and how old it is. The value for older cruets in excellent condition would be more valuable.
The population of Notre-Dame-du-Cruet is 182.
The area of Notre-Dame-du-Cruet is 1,900,000.0 square meters.
You can find a glass cruet that is easy to refill in Wheeling WV at your local kitchen supply store. All of them carry glass cruet sets.
A cruet is a glass container used for Oil and Vinegar for salad dressing made at the table. They are usually glass and kind a squatty with a glass stopper and handle.
One can easily find a second hand and an affordable cruet at second hand stores. Such stores are quite common across the US. Another good place to look for a second-hand cruet are garage sales.
Basically, it's a platter of oysters.