BERLIN CABINETS-EXPEDTION 6. 6. 71, framed cancel of 3 lines clear in black on blue cover "royally rod and line. " with framed cancel of 3 lines "through Expresses to ordering Most High Ordre" to a General-Mayor from Arnoldi in Cologne with arrival postmark, transport traces in the margin, in fact rare stamp in black from the "blue Period"!