 This coin had the pied cormorant on the reverse side, as did the other $5 coins of the year, however the obverse was from Solomon Islands.Though not technically a mule, a mix-up of a different kind arose in 1975 when some NZ 20c coins were accidentally struck on scalloped blanks intended for the Hong Kong $2 coin.The obverse and reverse dies are correct for the NZ coins; only the blank is the incorrect shape.