<p>A set of laminates including an outer laminate and an inner laminate,
wherein the outer laminate includes a transparent polymeric support having on one side of the support a colour laser markable layer containing an infrared dye having an absorption maximum in the infrared region » max (IR-1);
wherein the inner laminate includes a transparent polymeric support having on one side of the transparent polymeric support a colour laser markable layer containing an infrared dye having an absorption maximum in the infrared region » max (IR-2) and on the opposite side of the transparent polymeric support a colour laser markable layer containing an infrared dye having an absorption maximum in the infrared region » max (IR-3); and whereby the conditions a) and b) are fulfilled:
a) » max (IR-1) > » max (IR-2) > » max (IR-3) ; and
b) » max (IR-1) > 1100 nm and » max (IR-3) < 1000 nm.</p>
