Are the city symbols found on the guard uniforms/shields? Because there are a couple of guard uniforms that I don't recall seeing a symbol, just a pattern of some kind.
Anvil - N/A pattern
Bravil - Buck/Deer
Bruma - Bird of some kind, eagle or phoenix maybe
Cheydinhal - N/A pattern/weave
Chorrol - Tree
Leyawiin - Horse
Skingrad - Two facing crescent moons
EDIT: And of course, Kvatch is the wolf.
http://www.uesp.net/wiki/Oblivion:City_Guard