photos a bit blurry, but i would seriosly doubt Australian silky oak is your timber, it,s not that dense,or widely avaliable, although the top edge of the second photo does look a lot like it, your description of the colours rule it out, I think. maybe it,s a tropical relative? Most pallets I saw in Australia use treated Radiata pine or very low grade Tasmanian oak, which is just a trade name, not a species as such, and not red . I would suspect it,s a no name asian tropical that may not even show up in your book. Just my best guess.