1911, lot of four rare offered imperforated trial proofs "Luitpold" in different colours as block of four miniature sheets (size approximate 145 x 120 mm) on ungummed (as produced) different-coloured documents (all with watermark. 4). As well the scarce 80 Pf. (Michel number 85 II, corner crease) and three times the 1 M. (no. 86 I). These once on white paper (brown spot in the margin, but without creases) as well two on others Paper colours (once with diagonal creases and once impeccable).