King Harald awarded the collar of the Order of St Olav to King Willem Alexander earlier today. The collar is visible in the table of gifts exchanged below. There were no other orders exchanged, as the King and Queen received the Grand Cross of St Olav in 1996/2013, and the Norwegian royals all received Dutch orders during the 1982, 1996 and 2010 state visits.
The Collar of the Order of St Olav is vere rarely awarded. Grand Duke Henri appears to have received it in 2011, and the former Emperor Akihito received it in 2001.