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The topic signet is discussed in the following articles:
...replacing the cylinder by the 3rd century bc. In Egypt the scarab largely replaced the cylinder seal early in the 2nd millennium bc and continued as the main type until replaced by the signet ring in Roman times. In the Aegean, various types of stamp seals were used throughout the 2nd and much of the 1st millennium bc, until in Hellenistic and Roman times the signet ring became...
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