Thanks David;
Not sure what you mean by fittings, but the baca baca was not made from aluminium. the metal is coppery in color and you can see green precipitates/stain still uncleaned in the pic which indicate that it is some form of copper alloy?
However at the base of the baca baca I guess previous owner added little clamps to tighten the baca baca I guess(?) and these pieces look like aluminium.
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