ath s . ▁ ▁The ▁Pay ung ▁U bur ub ur ▁Kun ing ▁( yellow ▁royal ▁um bre ll as ) ▁are ▁ 2 0 ▁in ▁number ▁and ▁made ▁of ▁silver . ▁Y ellow ▁symbol ises ▁royal ty ▁and ▁is ▁reserved ▁for ▁royal ▁usage . ▁The ▁Royal ▁Um bre ll as ▁are ▁each ▁t ipped ▁with ▁an ▁ 1 1 - point ed ▁star ▁and ▁cres cent . ▁ ▁The ▁T omb ak ▁Ber amb u ▁( long ▁spe ars ) ▁are ▁also ▁ 2 0 ▁in ▁number , and ▁ ▁have ▁bl ades ▁with ▁three ▁cur ved ▁indent ations . ▁They ▁are ▁made ▁from ▁ancient ▁spe ars ▁from ▁the ▁ 1 1 ▁states ▁of ▁Pen ins ular ▁Malays ia . ▁ ▁Nob at ▁The ▁Nob at ▁or ▁Royal ▁Musical ▁Ens emble ▁is ▁a ▁form ▁of ▁traditional ▁Mal ay ▁music , ▁and ▁is ▁considered ▁part ▁of ▁the ▁royal ▁reg alia . ▁The ▁Nob at ▁only ▁plays ▁on ▁special ▁occasions ▁like ▁the ▁Install ation ▁of ▁the ▁Yang ▁di - P ert uan ▁Ag ong , ▁the ▁invest it ures ▁of ▁the ▁other ▁Mal ay ▁R ul ers , ▁and ▁the ▁Ag ong ' s ▁birth day . ▁The ▁ensemble ▁was ▁introduced ▁in ▁the ▁ 1 5 th ▁century . ▁ ▁The ▁term ▁origin ates ▁from ▁the ▁Pers ian ▁word ▁na ub at , ▁which ▁means ▁nine ▁types ▁of ▁instruments . ▁Currently , ▁only ▁Ter eng gan u , ▁Kel ant an , ▁K ed ah , ▁Per ak ▁and ▁Sel ang or ▁have ▁their