1942 1c. black (thin striated paper), T16 overprint, the unique lower marginal PLATE BLOCK of eight (4x2) R9-10/2-5 of the discovery sheet of 100 with severely misplaced overprint, the left stamp on each row error OVERPRINT OMITTED, unmounted o.g. Characteristic climatic toning, a wonderful positional piece containing two of the ten extant "pairs", SGJ239a (Image)

1942-44 Negri Sembilan 6c on 5c brown, type 2 "Kanji" opt with type 21 surcharge (applied in one operation), left marginal block of 4 (R7-8/1-2), ERROR OPT AND SURCH DOUBLE, unmounted o.g. A perfect close double, with both impressions fully inked. Only one sheet of 100 existed. BPA cert (2011) as J268 var, prior to Part I listing. SG J268b (Image)