The School of Ishiguro, Yedo, of the early part of the nineteenth century came to be famous for its flat incised work, introducing colored surfaces. Kano Natsuo may be mentioned as the last tsuba-maker of distinction. The tsuba of the period between 1840 and 1870 were very elaborately decorated, and obviously could never have been used for their professed purpose. However, the collector will wish to acquire specimens of them, if only as examples of the marvelous handicraft of the Japanese metal-workers. Nearly all of the imitations of genuine old tsuba can be detected by holding the guard on one’s fingertip and striking it sharply with another piece of metal. The genuine tsuba will emit a bell-like sound, the cast imitation a dull one. A perfect patina is always to be sought for in a tsuba. One of the most important styles of ornamenting metal is _Zogan_, a process which includes damascening and is sub-divided into: _Honzogan_ work, in which an undercutting retains the hammered-in inlay (if flush with the surface, this is called _Hirazogan_, and if it is in relief, _Takazogan_), and _Nunomezogan_ work, which derives its name from a surface incised to represent linen mesh. The second style of ornamental working is included under the names _Kebori_ and _Katakiri_. With kebori work the lines are finely cut, and the word designating this class of work signifies “hair lines engraved.” Katakiri work produces engraved lines varying in depth to produce the effect of painting. The Japanese hold this style in high favor. The third style of ornamental metal-work is _Nikubori_; work in this style is carved in relief, low relief being distinguished by the name, _Unsunikubori_, and high relief, _Takabori_. The final style is _Uchidashi_. This metal-work is repoussé, and is often to be found in combination with nikobori. The subject of Japanese metal-work must ever prove one of fascination to the student or collector, and even a very small collection of tsuba will serve to cover the general field of representative styles. Like so many other articles of collection appeal, they combine the two interests of former utility and present beauty. CHAPTER XXXIV MEDALLIC ART What a marvelous field for enjoyment is opened to the collector by medallic art! To the uninitiated any coin or medal a hundred years old will seem instantly to suggest an almost prohibitive value. Nothing could be more of a mistake. As a matter of fact interesting coins and medals are within the reach of almost any one for a remarkably small outlay. Of course tremendous prices are given for tremendous rarities, but coin-and medal-collectors in America seem more interested in early coined United States cents which exhibit this slight variation or that, than in collecting for purely the beauty and the historic charm medallic art exhibits.