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1 Ryō 'Kōshū Tsuyu Ichiryōkin'
| Uitgever | Kai Province |
|---|---|
| Jaar | 1578-1609 |
| Type | Log in om details te zien |
| Waarde | 1 Ryō |
| Valuta | Log in om details te zien |
| Samenstelling | Log in om details te zien |
| Gewicht | Log in om details te zien |
| Diameter | Log in om details te zien |
| Dikte | Log in om details te zien |
| Vorm | Log in om details te zien |
| Techniek | Log in om details te zien |
| Oriëntatie | Log in om details te zien |
| Graveur(s) | Log in om details te zien |
| In omloop tot | Log in om details te zien |
| Referentie(s) | Log in om details te zien |
| Beschrijving voorzijde | Log in om details te zien |
|---|---|
| Schrift voorzijde | Japanese |
| Opschrift voorzijde | Log in om details te zien |
| Beschrijving keerzijde | Plain convex reverse of hammered gold, exhibiting the highly irregular, rounded dome profile characteristic of the Kōshū tsuyu-kin (Kai Province dew-gold) series. The surface is entirely unadorned, displaying natural flow lines, hammer marks, and surface undulations resulting from the hand-hammering production technique. A faint circular depression or partial seal impression may be discerned near the centre, likely a trace from the opposing die strike. No inscriptions, legends, or decorative devices are present. |
| Schrift keerzijde | Log in om details te zien |
| Opschrift keerzijde | Log in om details te zien |
| Rand | Log in om details te zien |
| Muntplaats | Log in om details te zien |
| Oplage | Log in om details te zien |
| Aanvullende informatie |
Kai Province's gold currency predates the Tokugawa unification that would eventually standardize Japanese coinage under the Edo mint system. These pieces were issued under the authority of the Takeda clan — and after Takeda Katsuyori's defeat in 1582, continued under successive administrators of the province. The "Kōshū" designation simply means Kai Province by its classical name, and the "tsuyu" (dew) likely references a quality or purity mark specific to Kai's gold-refining tradition.
Kai's mountainous terrain made it one of the most productive gold-mining regions in sixteenth-century Japan, centered on the Kurokawa gold mines in what is now Yamanashi Prefecture.