Obj. ID: 1300
  Sacred and Ritual Shadai'a (Dedicatory Plaque), Greece, Thessaly, early 20th century
The rectangular plaque, with curved edges is inscribed with a dedication engraved in Hebrew square letters, which reads:
"'(אל) שדי'/ הקדש/ ק"ק גד/ וש (גדול) יב"ץ (יראה בנחמת ציון; ברכת המזון) מה/ יקר הר' יום/ טוב עטיאס/ הי"ו (ה' יחיהו וישמרהו)."
"'(El) Shadai' (God Almighty), a dedication made to the Great Holy Congregation (Remarks: no. 1), 'May we would gain to see the redemption ofZion' (Based on the Benediction over the meal), by the dear Rabbi Yom Tov Atias, May the Lord sustain and protect him."
A Star of David is engraved on the back of the plaque
Online collection of the ritual objects from the E. Ringelblum Jewish Historical Institute is available here: http://cbj.jhi.pl/collections/964689
1. The Hebrew words are separated in a wrong sequence, sometimes separated in the middle of the word. The word Kadosh (Holy) is spelled as the local pronunciation, replacing Ka withGa.
sub-set tree: 
Structure: cut
Decoration: engraved
Bonding: none
Inscription: engraved
Width: 50 mm
Intact
The custom of donating silver plaques as sacred objects is unique to these communities. Some inscriptions do reveal that occasionally they were donated with other ritual objects, such as a Torah scroll, a parokhet, or a mappah.
Amar, Ariella, "Sacrificial donations among the Romaniot Jews," Studia Rosenthaliana 45 (2014): 91-114