20 Pfg crown / eagle, medium ultramarine, tied by full, straight and neat postmark "LAMU 31 / 3 91" (last day) on letter piece, outstanding quality, photo expertize Steuer BPP (2020), Michel. 800.- undervalued, the crown / eagle issue with Lamu stamp becomes virtually never offered! In of our 136. Auction could we the last time a piece offer and obtained 801.- Euro in the hammer price!