A blog reader purchased this item on eBay. It's from Walker & Hall and is just under 5 inches long. The seller said it was a sardine server.
The buyer wonders if this truly is a sardine server. You can't tell from the picture but the bowl slants downward. Normally, a serving piece is designed to be used with the pattern facing up. For this piece, the angle of the bowl with respect to the pattern does not make sense for a sardine server.
If you have any ideas, post a comment.
Picture courtesy www.eBay.com