Yeah, i just want to say that i'm sorry... i don't know how to quote people, but i think what BlackcowboyBS said is a possibility. I know of the miniature Grand Crosses as i've seen them in paintings and in real life at the Stockholm Palace where Charles XIV John's Marshal's uniform that he wore during the Battle of the Nations at Liepzig in 1813 is on display.
Here are some examples:
Charles XIV John of Sweden's Marshal's Uniform with the small Grand Crosses of both the Order of the Sword (left) and the Order of Vasa (Right).
Charles (XIV) John as Crown Prince of Sweden wearing the small Grand Crosses of both the Swedish Order of the Sword and the French Legion of Honour.
Nicholas I of Russia wearing the miniture Grand Cross of the Order of St. George.
Charles XIV John of Sweden wearing the small Grand Crosses of the Order of the Sword (Left), the Order of the Polar Star (Middle) and the Order of Vasa (Right)
Oscar I of Sweden wearing all the Swedish chivelric orders on his left breast.
Jean Baptiste Bernadotte, one of Napoleon's Marshal's and later Crown Prince and King of Sweden.
These wear just some examples i knew of the top of my head. But i'm sure there are plenty more out there. Sorry for my bad spelling though.