Abstract: An engraved image identification card has a translucent planar base member with a multiplicity of engraved scores extending into one of its surfaces with an opaque layer positioned adjacent either the engraved side of the translucent member or the non-engraved side of the translucent member opposite the engraved side to provide enhancement of the contrast between the engraved and non-engraved regions in the translucent member.

Abstract: A latent image identification card has a translucent base with a multiplicity of engraved scores extending through a generally opaque top layer into the base layer whereby a "negative" image appears when the background light is below a determinable value and a latent, "positive" image appears when the background light passing through the translucent base is above the determinable value.

Abstract: A double engraved identification card has a first planar member with a first engraved image in one of its major planar surfaces and a second planar member with a second engraved image in one of its major planar surfaces. The first and second engraved images are aligned in coincidence and the first and second planar members affixed to one another so as to form a single composite image. A slot is provided between the first and second planar members between the first and second engraved images. The slot has an edge access opening to selectively receive an opaque card through the edge opening into the slot region and prevent simultaneous observation of both the first and second engraved images.