This is an unusual presentation, possibly not complete.  We will describe what we have.  Undo the clasp (like what holds the flap of a manila envelope in place) and the whole thing opens to front and back cover and six linked postcards, all in one piece.  Each postcard has coloured, pre-printed 80 fen postage because this was issued by China Post.  As well, each card has two slits along the right edge.  Those slits are there to hold smaller cardboard strips with photos and more scenic information.  It’s all in Chinese.  But those strips are only there for three of the six cards, and we don’t know if the other three should have been there or not.  We got this from China Post — they should not have sold an incomplete set, but who knows.  Consequently, Grade: 4