I have an old, electric coffee percolator from the 1920's that worked perfectly until a couple of years ago. It's still on my dining room buffet though, because it looks really cool being there! They look kind of like big, silver trophies, if you know what I mean. Now, you've got me wondering what the brand of mine is.
Anyway, does yours look anything like those that you might find in images on the pages of the following searches? If so, which one or ones, please? Thanks!
La Belle Silver Co. Inc. Percolator - Google Image Search Antique Coffee Percolator Silver - Google Image Search
A well-stocked hardware store should have a cord that would work for yours. You could also try thrift and second-hand stores of various types in order to find one.