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On the sign:
סמל המועצה לשימור אתרי מורשת בישראל סמל הפלמ"ח
בית יצחק שדה בבית זה חי בשנותיו האחרונות אלוף יצחק שדה מייסד הפלמ"ח מחנך ולוחם
The sign is rectangular but its head is designed according to the silhouette of the old building of the Gymnasia Herzliya, which serves as a logo of the Council for the Preservation of Heritage Sites in Israel