A friend in Italy from many years ago owned a military Bianchi 500 single from WWII. He was keen to point out the super low marching gear deemed neccessary for military parades although normally locked out. Wonder if your prototype has the same.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone