半分至拾分全套共五枚蓝色加盖 "欠资" 票, 保留大部份原背胶, 票有几处轻微揭薄; 查此项加盖欠资票乃未经授权, 即已被邮局窗口值班人员误卖了共56套, 后来退回邮局者, 将全数退还现金. ChefooPostage DueUnofficial½c. to 10c. set of five overprinted postage/due in blue, part to large part original gum; a couple of small thins. Apparently an over-zealous clerk overprinted 56 sets with Postage Due but these were not authorised and their return requested. Photo
