Our scan only shows the first of seven cards in this (unused) set, because it’s still in the original cellowrap and we’ve not opened it.  But we have seen the other cards elsewhere, and they are, as the title suggests, paintings and calligraphy in this vein.  This is Hong Kong Government’s Postage Prepaid Picture Card Series No. 56, with pre-printed worldwide airmail postage.  Grade: 1