10 Gr. drawing numbers in the horizontal pair and NDP 30 Gr. drawing numbers, in each case with handwritten cancellation "Aachen B 24. 7. 73" on insured letter with framed cancel of 3 lines AACHEN railway station 24. 7. to Munich, cover with openings and fold traces, the horizontal pair has crease and the NdP-stamp is defective, despite the restrictions still fine cover with this very rarely mixed franking only with work at the office stamps German Reich and NDP, photo expertize Sommer BPP