Cayman Islands 2005 PMG Graded Lot of 3 with Matching Low S/N 66 for Each Prefix
Cayman Islands 2005 P-34a PMG Choice UNC 64 EPQ 5 Dollars
Cayman Islands 2005 P-35a PMG Gem UNC 65 EPQ 10 Dollars
Cayman Islands 2005 P-35a PMG Gem UNC 66 EPQ 10 Dollars
Each example has the low serial number 66 for the prefix and/or denomination. An unusual set.