Here are the other denominations.
The '1928 set' is made up of all seven notes, all of which bear the same date: 10.9.28, the only instance of a date which is on all the denominations. Most serious collections will aim to include the full set in their collections.
Irish Free State Ten Pounds, 1928, first date of issue.
Twenty Pounds, 1928
Fifty Pounds, 1928
One Hundred Pounds, 1928