Here's a better photo of the first century Jewish seal, with the words "Pure for God" written on it. A seal like this would be placed on an item, such as a vessel of oil, indicating its ritual purity and fitness to be used in the Second Temple in Jerusalem. See jewishpress.com's article here.
"The item is stamped with an Aramaic inscription consisting of two lines – in the upper line “דכא” (pure) and below it “ליה” (to G-d) – and is probably the kind of seal referred to in the Mishnah as a “seal (Tractate Shekalim 5:1-5), according to excavation directors and archaeologists Eli Shukron of the Israel Antiquities Authority and Professor Ronny Reich of the University of Haifa."
