10 red Christmas cards with white envelopes: find pairs

 <p><b>Christmas cards with white, self-adhesive envelopes; Idea and design: Annette Leuckel</b></p> <p>10 folding cards landscape format 10.5 x 21 cm (open 21 x 21 cm)<br> Offset printing 2/0 (Pantone 1795 and Pantone 158 + glossy varnish), Invercote G 300 g/sqm, micro-perforation<br> 10 self-adhesive envelopes DL with straight flap<br> bright white paper 100 g/sqm with gray interior print<br> an envelope weighs just under 6 grams, a card weighs a good 13 grams <p>Christmas cards with memo function: the recipient can first tear the front apart and then puzzle it back together.</p>