Taxco 6" Sterling Mexico Snake Brooch

Beyond fabulous. Not sure where or when I bought this. Only I can find, looks same is Sergio's Taxco Sterling. Stamped: TX, TM, or T something, can't quite make it out, SD MEX 925. It's approx 6.5" long & has brooch pin & pendant loop, so could be worn either way. It has not been worn or used, is new with no tags & I am original owner. Firm on price, selling for $570 elsewhere. Still hope to use. Love these long brooches on a lapel or better yet, on the bottom of a sweater, bunched up to give asymmetrical look. stored: mb linen #3