Lot 448 Great Britain

1912 Booklet pane of six ½d green full gum with wmk upright, precancelled with two strikes of type I LONDON E.C. / 58 / 1 JU / 20 double ring CDS without time slug. Primarily used to send to advertisers a voucher copy of the booklet showing the advertisement. See SG Spec NB6 v Cat £200. (P.168).