On 23 July 2015, Mr. Bhakavat Tanskul, Minister of the Royal Thai Embassy witnessed the 2 pieces of repaired pearl inlay doors delivery ceremony between the Rajapradit Temple and the Tokyo National Research Institute for Cultural Properties (TNRICP),according to the Rajapradit Temple`s Japanese pearl inlay door conservation work project.
The decoration on the doors was drawn in Japanese style and was decorated with the pearl inlay, which had been made by craftsmen in Nagasaki. Rama 4th had bought them from Japan to decorate the inside doors and windows in the temple. The pearl inlay doors are about 150 years old and they have rare artistic and historical value, as most of the similar doors kept in Japan were destroyed during World War II. Nowadays, there remain over 100 pieces of the pearl inlay doors at the Rajapradit Temple, which are mostly damaged and cannot be repaired by craftsmen in Thailand. On 8 Oct. 2013, these pearl inlay doors were delivered to the TNRICP to study the condition of the doors and find methods to restore them, as closely as possible, to their original condition.