银贰分, 第三次版淡榄色试色样票, 由别发洋行(Welly & Walsh)再绘制, 无齿孔及试盖红色镇江无日期戳; 保存完好及罕见.Chungking 1894 Third Issue Essays 2ca. colour proof in pale olive of the redrawn design by Kelly & Walsh, imperforate and with part "chinkiang/postal service" cancellation in red. Fine and scarce. Photo