A mailer intermediate, foldable into postcard size, includes a generally rectangular sheet of card stock having first and second side edges, first and second end edges, and first and second faces. A fold line extends substantially transverse to the side edges and substantially bisecting them, and dividing the sheet into first and second portions. An adhesive pattern on the first face of the sheet, adjacent at least one of the first and second end edges, secures the first and second portions together adjacent the first and second end edges. An obscuring coating and a camouflage image are provided on the first face of the sheet. Variable indicia are printed on the obscuring coating, and are not legible when viewed by an observer who separates the first and second portions while the first and second portions remain secured together adjacent the first and second end edges. The obscuring coating may comprise a multi-layer, thermochromic coating. Alternatively, the obscuring coating may comprise a reflective coating.