Agree with both responses above.This is a stamps for specialists (I don't count myself as one) and it is the same basic design in both stamps.
Your first stamp is from the later typo printing in 1908. A later printing of 1909 added "Dominion of" above the country name New Zealand.
The second stamp is was recess printed from 1901, 1902, 1904, 1905 or 1906.
Several different companies made the plates for these stamps. There is also a variety of watermarks, perforations and paper types which makes identification quite difficult.
The following images show a much simplified album layout for the earlier printings and a couple of examples from the 1909 which, apart from the country name is very similar to the 1908 issue.