Inverted watermark comes out from time to time in new prints for this bird definitive series, though it is not that common. For instance, this has been demonstrated in the new prints of the denomination 30 sen. Therefore, watermark is not a definite answar to the identification of the new prints. Then, how to distinguish the new print from the original print?
The stamp on the left is of the original print, and the one from right is of the new print.
Well, the answer is laid on the relative distance of wordings to the images (see below). The word "Malaysia" is located further in for the original print but further out for the new print; the word "RM5" is closer to the bird for the original print but more distance for the new print; and the word "Besar" is located below a small tree branch for the original print but on the tree branch for the new print.
The left ones are of the original print, and the right ones are of the new print.