Both rian and silver casing plastic is being yant by Lp Maha Surasak. Luang Phor Maha Surasak Wat Pradoo BE 2552 Geilaitong (Made only 500 pieces) Serial Number 112 Case in Real Silver Casing This batch of LP Yai Rian was chanted 7 days and 7 night by LP Maha Surasak himself. Main purpose of this rian was to raise fund to build Buddha Viharn. Amulet is in perfect condition and yanted personally by LP himself. Ask LP which is the best amulet to wear and he will tell you this batch of rian is what he think is the best. Those who wear this rian wil be blessed with happiness, wealth, good metta, smooth sailing effect and good luck.