I have not shown much Labuan before mainly because my collection is small and good Labuan is expensive and hard to come by. We are also easily detracted by the large amount CTO material. However, there are some items that might be worth sharing over the next few weeks.
This is the K1 cancellation. It is seen in either red or black. I have seen more examples in red which are definitely pleasant to the eye. Black was probably used in the later years and is more uncommon. The lifespan of this handstamp was between 1864 and 1882. It should be perfectly rounded but not in reality due to various reasons of inking, application etc. K2 is very similar but the dots are smaller.
This is K2 which was supposed to have been used for the sole year of 1883 just before the more common 9 bar K3 cancel came into play. The dots are much finer as seen towards the lower part of the cancellation. It should be much less common than K1. I doubt that it is available in red but one never knows.
This is another K2 but not from Labuan. It looks elongated and is more like the dots cancel K2 from Sandakan. The dates would be compatible as this adhesive was issued 1892-93 and the Sandakan K2 was in use 1891-93. This was either used in Sandakan or had received an arrival cancellation. It is an uncommon finding.
This postally bar cancelled 1883 2c stamp has the mysterious AC marking in blue commonly found on the very early stamps of North Borneo. Could it have been an arrival cancel? There are still great unknowns about the nature and origin of this mark. Names bantered about include Abrahamson & Co. and the treasurer general Alexander Cook. Update The AC cancel was probably allowed to be used for cancelling mail instead of the usual pen cancels during 1883 before official cancellers came into use in early 1884.