This keychain is in the design of what could have been the seal of the first or second century Messianic Church in Jerusalem.
In 1990 Ludwig Schneider, editor in chief of “Israel today” magazine was handed, by a monk who is no longer with us, a collection of artefacts which had been recovered from a cave on Mount Zion. Many of the pieces were marked with a previously unknown symbol which comprised the menorah at the top, the fish at the bottom, with the two joined in the star of David. Schneider was convinced that this was a symbol of the first Jewish-Christian church.
The breastplate (choshen) was one of the eight priestly garments worn by the high priest (kohen gadol) when serving in the Holy Temple. It featured twelve precious stones, corresponding to the 12 tribes of Israel.