fil de sécurité

OBS: Les fils de sécurité peuvent être colorés ou fluorescents, visibles ou invisibles.

CONT: Another deterrent introduced on $10, $20, $50 and $100 bills in the 1990 series, is the insertion of so-called security threads, metallic polyester strips inscribed with USA and the denomination of the bill. Invisible to the casual viewer, the threads, which run across the bills from top to bottom, can be discerned only when the bill is held up to a light. Forty-five percent of the $100 and $50 bills legally printed after 1990 have security threads, and $5 notes will begin to get them this year.

CONT: Al observar a contraluz el anverso de los billetes de [...] 1000 pesos, se aprecia un hilo de aproximadamente un milímetro de ancho que cruza verticalmente el billete. A este hilo se le conoce como hilo de seguridad y se localiza casi inmediatamente a la izquierda de la imagen del prócer.