Here's a camera phone shot I took through a dirty window in my building. You can see a dot (tee-hee) at the NE corner of the base of the statue. That's our Dot!
Thanks for the info and the vintage picture, Ei. And Shaky, I like that Ralph idea. We could call him Ralph Mercury, although people might think we're referring to Freddie's brother.
Remeber last year when Mercury got a cleaning? Well, the crew took a few pictures when they were up there in the basket. Turns out Mercury's base has a face on it. Here it is. Who knew? Must be part of Mercury's Greek mythology.