Peter Wever sells about 35 different original colour etchings by now, all numbered and signatured. Prices per piece between 180 to 400 EURO. There is no catalogue, no offset prints or fotos, posters ect. The cards or prints you are talking about are at least 8 years old and are not being printed anymore. contact me for further infos and purchase, in case you are from the continent. In England I would recommend the Railings Gallery, London: trg@railings-gallery.com