In the first half of 17th century, a large amount of cupellated silver such as soma silver (Sama, iwami Province), nagito silver (Nagato Province), seda silver (Sado Province) and tajima silver (Tajima Province) was exported, and bakufu, in principle, prohibited export of good quality cupellated silver by the Order of 1609 and decided that settlement was made by keicho-chogin whereas although ratio of export of cho-gin and cupellated silver was unknown by frequent illegal export of cupellated silver, many of ishu-gin that had been proud of producing largest amount in the world was minted to keicho-gin and then exported.
17世紀前半はソーマ銀（佐摩、石見国）、ナギト銀（長門国）、セダ銀（佐渡国）およびタジマ銀（但馬国）等といわれる灰吹銀が多量に輸出され、幕府は慶長14年（1609年）令で良質の灰吹銀の輸出を原則禁止とし、決済は慶長丁銀で行うよう定め、その一方で不正な灰吹銀の密輸出が横行し、丁銀および灰吹銀の輸出高の比率は不明であるものの、当時世界有数の産出高を誇った石州銀などは、その多くが慶長銀に鋳造されて輸出されたことになる。