Tickets for The Last Supper in Milan must be bought in advance as Leonardo da Vinci’s famous painting on a wall in the refectory of the Convent of Santa Maria delle Grazie in Milan may only be seen with reserved tickets.
From left (heads): Bartholomew, James the Younger, Andrew, Judas Iscariot, Peter (Simon), John, Jesus Christ, Thomas, James the Older, Philip, Matthew, Judas Thaddeus, Simon Zealotes.
Note: Judas Iscariot leans back so his head is to the left of Peter. Judas, the only disciple facing away from the viewer, carries a bag of money in his hand, while Peter has a knife rather awkwardly in his hand behind Judas’ back.
Note the knot in the tablecloth on the far right. It is a wordplay on Italian for knot — il vincolo — and Da Vinci’s name. Knots appear in several of Leonardo’s paintings and he might have thought of it as a signature or trademark.
From WIkipedia: https://en.wikipedia.org/wiki/The_Last_Supper_(Leonardo_da_Vinci)#/media/File:%C3%9Altima_Cena_-_Da_Vinci_5.jpg