I had forgotten about it and intended to do a photo of the base of mine. I'll see if I can get one done over the next few days.
Pat, thanks for your pic... the bases on mine aren't twisted like yours - they are just round blobs (for want of a better description!)
Robbo, thank you. Oddly enough I have fruit dishes (in a golden amber colour) as well - they also have the same sort of blob feet but they are, of course much bigger. Pic of the fruit dish is here: http://yobunny.org.uk/gallery1/displayimage.php?pos=-547
I think these have 5 blobs (from memory).