Set of 6 ancient Chinese teapots

Set of 6 ancient chinese porcelain teapots "found on a case-by-case basis" on site in beijing in the 90s. Two of them have the original wax stamp from the export duty office (the blue and the largest, in the center of the overall photo). To give an idea of the dimensions, the red lacquer top (which is not sold in the lot) measures 28*39 cm. All packaged: 40 X 34 X 17 cm. In the overall photo, notice that on the one on the right at the back (bird on the flowering branch) the pourer has been repaired-stapled the old way. The little one on the left (character) has a signature stamp and its pourer has been glued.