70 Dollars

The 70 Dollar denomination was issued to mark the fiftieth anniversary of the Cayman Islands Monetary Authority, making it a commemorative piece rather than a routine addition to the circulating series. Denominations of this face value are rare in any currency — 70 is not a figure that emerges from practical monetary arithmetic, which is precisely the point. It was never intended as a working note.

De La Rue's Basingstoke plant produced it on polymer substrate, part of the broader industry shift away from cotton-linen paper that the Cayman Islands had already adopted for earlier issues. Polymer survivability largely makes the commemorative argument moot from a preservation standpoint, but the denomination alone ensures most examples went straight into collector hands.