Ribbon / net overprints on worker series Michel no. 36 / 51 I and II, interesting inventory with good 2. 000 stamps in mainly unhinged mint condition on A5-Einsteckkarten, as well numerous units, overprint peculiarities and evident colour shades. The stamps are often per 10 close behind one another puted, great specialist finding pit from aging dealer camp! (preceding starting price 400)