Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
When the face value is 42¢, what was the issue's date?

### Inputs:
table_name: table, columns: ['Ecosystem', 'Date of issue', 'Place of issue', 'No. stamps in sheet', 'Face Value', 'Printer']

### Response:
SELECT Date of issue FROM table WHERE Face Value = 42¢