QA: Using Rubbings for Dating in the Collector Market
问答：收藏市场如何用拓片给铜器断代
标签：断代,老拓片,递藏印,标准器比对
老拓片本身即是断代与递藏证据：清代拓本多用特净皮纸配松烟墨，墨色沉而不亮；民国后机制纸墨色泛光。藏家印与题跋（如陈介祺「簠斋」）可串联递藏链。纹样断代则靠拓片比对标准器——饕餮纹目部形制、夔龙纹角型均有明确分期特征，成交前应核对《殷周金文集成》等著录中的同铭器拓本。
Old rubbings are dating and provenance evidence in themselves: Qing-era rubbings use jingpi paper with pine-soot ink, matte and deep; post-1912 machine papers read glossy. Collector seals and colophons (e.g., Chen Jieqi's Fuzhai seal) chain the provenance. For motifs, compare rubbings against dated reference pieces—taotie eye forms and kui-dragon horn types are period-diagnostic; before a sale, check the same inscription in corpora such as the Yinzhou Jinwen Jicheng.