Effettivamente ha ragione,all'epoca era uno stemma parlante quello del canton Uri,almeno a quanto dice il sito Flags of the World:" History of the flag
The Uri flag is thought to have been in existence since at least 1231 when King Heinrich, son of Holy Roman Emperor Friedrich II, granted the region "imperial freedom". This meant they were sovereign and owed no feudal allegiance to anybody but the emperor and that they were entitled to their own flag. The flag was definitely carried at the battles of Mortgarten (1315) and Laupen (1339). A flag carried in those battles is preserved in the townhall of Altdorf.
T.F. Mills, 15 October 1997
The bull's head is called Uristier, meaning aurochs, Bos uris, which was domesticated by the original settlers. The red ring was originally gold. Uri citizens have been teased that the the nose ring represents the fact that the people of Uri had to be tamed. The bull has Celtic origins, representing royalty and a personification of the deity Cernunnos, who bore stag antlers.
Source: Angst (1992), "A Panoply of Colours: The Cantonal Banners of Switzerland and the Swiss National Flag"
Sempre lo stesso sito riporta che la prima bandiera del Moldavia-Valachia risale al XIVSec.,in teoria è parlante anch'essa
