Unpaid parcel letter from Copenhagen 6 November 1879 to Frankurt a/m, Germany. Parcel registration label 'Fra Kbh. Pakke. 679' and cds 'KJØBENHAVN PP 6/11', Slesvig border transit mark boxed 'Aus /über) Dänemark / via Hamburg 2 / Porto von Woyens'. Charged '100' in blue crayon, backstamped Hamburg 7/11 and Frankfurt a/m 8/11 79. Rare sealing label in blue on back ' ·KONGL.BREVPOSTKONTOR / KIØBENHAVN.' with crown and posthorn in the seal.