▁legal ▁tender . ▁It ▁is ▁of ▁note ▁that ▁the ▁United ▁Kingdom ▁itself ▁does ▁not ▁use ▁these ▁sizes ▁of ▁co ins ▁any ▁more , ▁and ▁there ▁has ▁been ▁the ▁odd ▁case ▁of ▁foreign ▁co ins ▁appearing ▁in ▁a ▁customer ' s ▁change . ▁The ▁consist ently ▁similar ▁but ▁not ▁significantly ▁higher ▁value ▁of ▁the ▁Australian ▁currency ▁and ▁the ▁ob verse ▁side ▁of ▁Australian ▁co ins ▁being ▁almost ▁the ▁same ▁as ▁New ▁Zealand ▁co ins ▁also ▁didn ' t ▁disc ou rage ▁this ▁practice , ▁with ▁millions ▁of ▁ 5 , ▁ 1 0 , ▁and ▁ 2 0 ▁cent ▁Australian ▁co ins ▁having ▁been ▁used ▁in ▁New ▁Zealand ▁in ▁an ▁identical ▁manner ▁to ▁their ▁true ▁counter parts . ▁These ▁co ins ▁could ▁circul ate ▁for ▁long ▁periods ▁without ▁being ▁recogn ised . ▁The ▁coin age ▁size ▁and ▁material ▁change over ▁( see ▁section ▁Change ▁to ▁smaller ▁co ins ▁above ) ▁of ▁ 3 1 ▁July ▁to ▁ 3 1 ▁October ▁ 2 0 0 6 ▁means ▁these ▁foreign ▁co ins ▁can ▁no ▁longer ▁be ▁accepted ▁inter change ably , ▁though ▁the ▁new ▁ 1 0 ▁cent ▁coin ▁strongly ▁res emb les ▁the ▁British ▁one ▁pen ny ▁coin ▁in ▁size , ▁weight ▁and ▁appearance ▁and ▁the ▁un changed ▁one ▁doll ar ▁coin ▁remains ▁very ▁similar ▁to ▁the ▁F ij ian ▁counter part . ▁There ▁is ▁also ▁occas ional ▁confusion ▁between ▁the ▁New ▁Zealand ▁one - d ollar ▁coin ▁and ▁the ▁Australian ▁two ▁doll ar ▁coin , ▁and ▁similarly ▁between ▁the ▁New ▁Zealand ▁two ▁doll ar