April 29. On this date in 1953, Shoghi Effendi placed) "a fragment of plaster from the ceiling of the Báb's prison cell in the Castle of Mah-Ku beneath the gilded tiles of the dome of the Shrine."

April 29. On this date in 1953, Shoghi Effendi placed) "a fragment of plaster from the ceiling of the Báb's prison cell in the Castle of Mah-Ku beneath the gilded tiles of the dome of the Shrine."

From Bahá'í Faith, The: 1844-1963: Information Statistical and Comparative, Including the Achievements of the Ten Year International Bahá'í Teaching & Consolidation Plan 1953-1963...

Placing of a fragment of plaster from the ceiling of the Báb's prison cell in the Castle of Mah-Ku beneath the gilded tiles of the dome of the Shrine by Shoghi Effendi on the ninth day of Ridván, April 29, 1953.