1st April 1859: Cover from Diekirch to Liège (Belgium), franked by 10 c. grey-black in strip of six, paying the double-weight letter rate carried for the second Belgian distance, tied by circular type f concentric rings, with Diekirch c.d.s. and framed "PD" alongside, with backstamps including Weiswampach, Spa and Liège. Signed Goebel. Scott I . One of the largest multiples of this denomination on cover, representing one of the most spectacular frankings.