What do dragons have to do with Alduin?
/snip from a site...
Alduin is the Nordic variation of Akatosh, and only superficially resembles his counterpart in the Nine Divines. For example, Alduin's Title, The World Eater, comes from myths that depict him as the horrible, rauaging fire storm that destroyed the last world to begin this one. Nords therefore see the God of Time as both creator and harbinger of the apocalypse. He is not the chief of the Nordic pantheon but its wellspring, albeit a grim and frightening one.
Which makes sense, because the symbol on the cover is on the back of the coin from TES IV - which is of course Akatosh.