翻訳と辞書 |
Wavy steps and trails : ウィキペディア英語版 | Wavy steps and trails
The wavy step or trails error is a die error that is found on some United States minted coins beginning in 1986. The anomaly occurs during the die making by the single-squeeze hubbing process. ==Cause== While the exact cause of "trails/wavy steps" is not known, it is believed to be caused by movement of the die against the hub during the single squeeze hubbing process. Similarities exist between this anomaly and the doubled die, however, the major difference is that a doubled die is a duplication of a design element, while a "trail" die is an extension of a design element.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Wavy steps and trails」の詳細全文を読む
スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|