Just to get this conversation going in an extremely biological direction, I'd like to note that the cobra family (elapidae) is extremely common in the Australasian region, and includes such fun snakes as death adders and taipans.
Some of them look like cobras, some do not. Bottom line is that the elapids are widespread through Africa, Asia, Australia, and the central islands of Melanesia, so a cobra-like mark on a snake cane doesn't preclude it from coming from Melanesia.
My 0.00002 kina,
F
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