That postcard with an aerial shot of housing blocks in Novi Beograd must represent a regional trend. In Romania after the turn of the millennium, I found some old postcards from the 1980s in a bookshop that were still, though covered in dust, for sale. Several of them were the same: aerial shots of new residential neighbourhoods with buildings of not particularly impressive architecture. I don’t know if Communist officials actually thought that Western tourists would be interested in these kind of shots, or if postcards were just exploited as one more disingenuous propaganda medium for boasting about development statistics. Probably a mix of both.