After Somdej Phra Buddhacharn Toh announced his intention to create the amulets many senior foreign monks from Cambodia, Laos, Burma, etc, immediately came to the kingdom to pay respects to Phra Buddacharn Toh, and also to donate sacred materials.
1.Gold, which was received from Khmer and Burmese senior monks, ground into powder. Many of the pims you can actually see gold fragments embedded in the powder.
2. Ancient Tavaravati-period pills, received from senior monks originating from Laos, some were ground into a powder others added to the mixture, whole, giving the amulets their very distinctive appearance.
3. Jewelry, which was received from Khmer and Burmese senior monks, also ground into powder.
4. Sacred relics of Lord Buddha, received from some disciples of Somdej Phra Buddhacharn Toh and Lao monks.
5.Wrecked parts of the old Prathat Phanom, renovated in B.E.2408, also ground into powder.
6.Other kinds of sacred powder such as Ittijae, Maharach, Buddhakun, kept by Somdej Phra Buddhacharn Toh for many years were also added into the mixture. Fragments of Phra Benjapakee etc
Because King Rama IV wanted the renovation project to be completed within that year (B.E.2408) many monks from both Wat Rakhang and Wat Phratat Phanom were involved in making these sacred amulets.
Interestingly this resulted in the amulets created that were different in design and composition depending on where they were made.
Anyway the amulets, created at Wat Rakhang, were easily identified because Jaoprakun Dharmatanacharn (Jaokun Nap), a high-ranking monk of Bangkok, also attached a gold plate onto the reverse of each amulet.