_Pusan.--Iklynton Collar._--Among the royal orders issued on the
occasion of the marriage of Henry VI., contained in the fifth volume of
Rymer's _Fædera_, p. 142., occurs the following:--
"We wol and charge you, that ye deliver unto oure trusty and
well-beloved Squier, John Merston, keeper of our Jewell, a
_Pusan_ of golde, called _Iklynton colar_, garnished with iv
Rubies, &c., &c."
What is the meaning and derivation of this word _Pusan_, and why called
_Iklynton collar_?