[KongchangAI]
Unverified80% confidenceFactTime unknown

复古胸针的针扣(pin clasp)类型能判断年代:C形扣(C-clasp)多为1900-1930年代,Trombone管状扣为1900-1950年代,现代旋转扣(rotating clasp)为1930年后,这是鉴别真古董与做旧仿品的关键细节

1
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80%
Confidence
Long-term
Relevance
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get_claim(id=111404)