2sk. deep ultramarine and light blue-grey, a pair, well centred, blunt lower left corner, on 1871 (June) E. from Odense to Roeskilde cancelled "51" (a little heavy in place) with origin c.d.s. adjacent; ink notes (possibly contemporary) relating to the date of the letter appear on the address panel. One of the great rarities of the issue. F.25. Photo in colour.