EPNS stands for Electro Plated Nickel Silver - another term for silver plate.
The stamp "2000" on a silver dish likely refers to the silver content, indicating that the dish is made from 80% pure silver. This marking is a common way to denote the quality or purity of the silver used in the dish.
Nothing its plated
EPNS stands for Electroplate Nickel Silver - a process that was less expensive than sterling. Most of these pieces started in England then spread as the process was improved. Go to silvercollection.it/electroplatesilver.html for more information. They would fuse sheets of silver to the top and bottom of (usually) copper although other metals have been used. As for 2s ? I am not sure mine is stamped A.1 and I am still looking for the indication.
From what I understand, it is silver, yet of a lower grade such as nickel silver. It was refed to often as 'blackened silver', or something similar. Whatever you do if you hope to sell it - do not remover the tarnish.
There is a seven-inch International Silver Company silver-plated candy dish that appears to match the description of your item (see discussion page) listed on eBay today [December 12, 2000] at a buy-it-now price of $9.95. Comparable dishes sell for $1.00 - $12.00. Silver-plated objects typically have little value as antiques because the silver content is extremely low.
Silver
To polish an old silver dish you should buy a good silver polish and rub it with a non-abrasive material. Silver can de delicatie so be careful!
reed barton 170 silver gravy dish . How much is it worth
Yes, I Want to change My Dish TV Package Platinum to Silver.
It's a traditional dish throughout England.
Beresford plate as far as I can ascertain: john Septimus Beresford 1876..1890 your dish is silver plated rather than silver.
fish and chips :)