1870. PROOF. 48 sk. in 3 diff. colours. All with TRIAL-CANCELLATIONS “Kjøbenhavn KB 31.1” or. numeral 1. Imperforated and with inverted frames. WATER MARK “CROWN” SIDE WAYS (only danish stamp or proof with this phenomenon!). Extremely rare. AFA 15.000. Ex. Lasse Nielsen (2 certs.) [ P21A ] [ ⊙ ]