The two egg cup that you are seeing on the photo come from Sheffield - 20th century. They have incredible collector's value and it can be the perfect completion to your collection. Besides that they can be used for decoration in your home.
There is a stamp E.P.N.S. which means Electro Plated Nickel Silver
The items are in perfect condition.
Egg cup collection is a very popular hobby in England. It actually has a name - Pocillovy - which comes from the Latin word pocillum and means small cup for eggs. Collecting egg cups has turned into real art - there are egg cup museums and exhibitions all over the world. Here are some of the most popular ones:
Powerhouse Museum of Science and Design in Sydney, Australia - there is a separate section for egg cups.
National Maritime Museum in London, United Kingdom
Palacio Real de Madrid - Spain
Museums of the City of Bamberg - Germany
Heimatmuseum from Strausberg - Germany
Historical Society Museum - Middleton, Wisconsin
Basically, an egg cup is a container for serving boiled eggs within their shell. It is interesting that an ancient silver egg cup has been found in the ruins of Pompeii from 74 BC. In addition, egg cups have been discovered at the Bronze Age palace of Cretan Knossos from the 18th century.