Thanks to everyone for your input. Clearly I was quite fond of all of the choices. It's likely I'll buy another two or three as special occasions arise, but it was most helpful to see what you thought.
Now to get a cool pair of steampunk cufflinks...*
*He already has Cybermen, so they'll do in a pinch. Also: all of the steampunk cufflinks I'm seeing are mad expensive.Either that or I'm a skinflint. bah.