1867 (Dec 6) Envelope to Denmark with GB 1865-67 1s tied by crisp "C35" barred oval with despatch cds adjacent, with very fine "INSUFFICIENTLY / (cross) / PREPAID" hs with ms "3d" erased by pen stroke, Copenhagen bs, cover has been cleaned with stamp still a bit soiled with corner perf. faults, attractive and scarce underpaid usage to an unusual destination. (Image)