The blow pipe as depicted on the stamp seems a little short in length, it looks like a "flute" rather than a blow weapon.
Orang Asli - the aboriginal people of the Peninsula Malaysia has their first appearance on a Malaysian stamp (Not including the Malayan stamps and those stamps which do NOT depict Orang Asli as the main subject). Glad to see the typical blow pipe of the orang asli featured on the stamp however I feel there is a design fault in the stamp, the usual long blow pipe of the Orang Asli appears to be a short piece of weapon on the stamp, the pipe looks to me like a flute. Look at the "real" blow pipe weapon as depicted on the postcard.
A maximum card realised with "Orang Asli blow pipe weapon" stamp, FDI pictorial cancel @ Jerantut