Lot 30511 – 1866, 50r blue, featuring the “filigrana de sutura”

1866, 50r blue, featuring the “filigrana de sutura” (“suture” or “stitch” watermark) vertically and horizontally in two single examples, cancelled in black and blue, usual toning and one stamp with natural paper wrinkle mentioned for accuracy; an exceedingly scarce duo. Ex Dr. de Amaral Machado.

Note: The “suture” watermark is caused by the splicing of the felt that carried the wet paper -during the process of its manufacture-, which was made with metallic threads. It is an accidental filigree with the appearance of a suture, when the stamp is examined in benzine.