I do not like the arm so much, so I did not mention that part before. It looks a bit like Tiberius' head is blocking the view of the being whose arm it is. If viewed as a part of Tiberius, an arm coming out near his ear seems very strange indeed. And it is strange that it is a different color from his head. So it really looks to me to be the arm of someone behind his head.
The party hat and drinking the wine are the important bits that make it festive.
The party hat and drinking the wine are the important bits that make it festive.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.