The General Security Service (GSS), known outside Israel by its acronym "Shin-Bet" (the first letters of the partial Hebrew name Sherut Bitahon), is Israel's internal intelligence and security agency. It protects the State against terrorism, sabotage, espionage and other security threats, for instance originating from the Palestinian Authority or areas under Israeli military control.
Almost all operations of the GSS are shrouded in mystery. Because of its preventive actions, many deadly terrorist assaults on Israel and its civilian population have been foiled since its foundation in mid-1948, only several months after Israel became independent.
The GSS is also known for its competence in pursuing and apprehending of terror suspects and perpetrators of terrorist outrages against Israel, both the actual terrorists and their handlers.
The "Shin-Bet" medal's obverse has two varieties; one with the words
"State of Israel" and without the State emblem, and the other without the
name "State of Israel but with the State emblem.
On both obverses appears
the Hebrew name Sherut Bitahon Clali (General Security Service), from
which the better known acronym "Shin-Bet" is derived. The common
reverse depicts the motto of the GSS, "Defender that shall not be seen".
Diameter of the medal is 59 mm. The medal is made of tombac alloy and
silver plated.
All medals were issued in 1991for the exclusive use of
the GSS, and its issuance was not published by the Israel Government Coins
and Medals Corporation.
Found at
https://www.shekelinfo.com/5-7.html