Avicularia sp. is the most accurate ID you will ever get for your spider i'm afraid unless you have an exact collection site. I can at least tell you it is not laeta, versicolor, minatrix, purpurea, diversipes, sp. peru purple or amazonica.
Until a revision has been carried out on the Avicularia genus no one will be able to ID your spider and most definitely not from just a photograph.
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