The currently used bird definitive stamps have been around for just over five years (the bird definitives were issued on May 14, 2005). The collecting of serial numbers on the reprints of these bird definitives for denominations 20s, 30s, 50s, RM1 and RM5 has been very exciting. I think a handful of collectors really get involved in the serial numbers of the bird reprints. I am not sure how many of these collectors have a complete collection of all the serial numbers including the watermark and gum varities. I myself still have a few missing ones for the watermark varieties.
With the introduction of new national definitives (garden flowers) on July 1, 2010, the bird definitives will most likely be phased out, at least for the denominations 30s, 50s and RM1. However, the fate of the bird 20s and RM5 remains unclear because the new national definitives (garden flowers) do not have denominations 20s and RM5. In other words, the collecting of serial number for these bird definitives might still be continuing, but with slower rate. We serial number collectors for these bird definitives have not got over from the hangover yet.......... hehehehehe