是凸印还是平印编辑同志：贵刊今年第二期《北海银行的创建及其最初印发的纸币》，对北海票的诞生经过记述甚详，读后颇受教益。唯在该币的印制工艺的叙述上，似仍有未尽之处。该文对北海票的印制过程是这样说的：“张玉田派人带着票样到日本占领下的青岛，请光华制版社经理班鹏志制版”，作了“铜锌照像版……四套（正、反面共八块）”；“印刷由掖城……同裕印刷局承印”，“石印的道林纸票子规范精美”。结尾又着重肯定：“均是用道林纸石印的。其铜版制作优良”。这就涉及到两种不同的印刷工艺。铜锌照像版：是凸版，用于凸印机印刷，当属凸印工艺。在比较艰苦的战争环境中，有了八块铜锌照像版，完全可以独立地承担印钞任务。石印：是平印工艺的一种，在胶印机不普及的情况下，是彩色套印的主要手段。既然县城的印刷局有石印的技术装备，也完全可以不与铜锌照像版发生关系而完成钞票的彩印任务，更没有必要冒险带着票样去敌占区制作铜锌照像版。那么，最初的北海票到底是凸印还是平印？抑或比较复杂的平凸套印？从文章的叙述方法上看，似乎是把两种不同的印刷工艺混为一谈了。由此，我感到，我们许多钱币爱好者、研究者，往往只惯于从发行、流通、图文特征等外在条件上去进行研究，而往往不注意生 Is embossed or flat printed Editorial Comrade: your issue of the second issue of this year, “the creation of the North Sea Bank and its initial issuance of banknotes”, the birth of the North Sea ticket after a very detailed account, after reading lessons. Only in the description of the printing process of the currency, there seems to be no place. This article on the North Sea ticket printing process is like this: “Zhang Yutian sent someone with a sample to Japan under the occupation of Qingdao, please Guanghua plate manager Ban Pengzhi plate”, made a “copper and zinc photographic version ... ... four sets (positive and negative a total of eight) ”;“ printing from the city with ... ... Yu Yu printing line printing, ”“ Stone Indian Dow note paper norms fine. ” At the end also focused on the affirmation: “are all printed with Dowling paper. The copper plate making excellent.” This involves two different printing processes. Copper and zinc photographic version: is a relief version, for printing machine convex, undoubtedly convex printing process. In the more difficult war environment, with eight pieces of copper and zinc photos, can independently undertake printing tasks. Lithographic: Lithographic printing is a process that is not popular in the case of offset press, is the main means of color overprint. Since the printing bureau in the county has lithographic technical equipment, it is entirely possible to complete the color printing of banknotes without the relationship with the copper-zinc photographic plates. It is not even necessary to venture into producing a copper-zinc photographic plate with votes for the enemy-occupied areas. So, the first North Sea ticket in the end is embossed or flat printed? Or more complex plano-overprinting? From the narrative method of the article, it seems that two different printing techniques are confused. From this, I feel that many of our coin lovers and researchers are often accustomed to carrying out research on the external conditions of distribution, circulation and graphic features, and often do not pay attention to students