To be sure that any needlework item is the genuine article ( as opposed to an inferior import or machine-made piece ) , look for a lead seal with an M , the emblem of IBTAM meaning it 's been certified by the Instituto de Bordado , Tapecaras e Arte ? ­ sanato da Madeira ( Institute of Madeiran Embroidery , Tapestry , and Handicrafts ) , an official island organization that has a showroom / museum on Rua Visconde de Anadia , 44 .
There is no official sign something is authentic .