The Verse engraved on the back of the Talisman is a good luck saying for success as it is mentioned in the Israel book of sayings of the Rabbi Shabtai Ish Lipshitz.
This is the verse Deuteronomy 33:18 “Rejoice, Zebulun, in thy going out, and, Issachar, in thy tents."
The teeth of the key form the letter "Peh" and the inner space of the PEH forms the letter BET. This is the form in which the letter appears in the Hebrew Bible. The reason for this being, that PEH, the divine speech creates the Briya (Creation) the Bet. The one who understands and experiences the cosmic language navigates his life in accordance with the heavenly plan.