Flag of the Rsi panzer SS help for identification

[Pisti78]

Hello everyone the forum I am a collector of franchises and postal history of the rsi, both for the battalions located in Germany and in Italy and the First World War always Italian, but recently I happened to find this old flag of the rsi belonged I think to the SS panzer division deployed on the Gothic line during the Anglo-American advance reads written panter 105 which was to indicate panzer, if someone can help me in classifying it I would be really grateful greetings Simone