Khun Paen Tai Badan 2548
Wat Lahanrai

Venerable Luang Pu Thammarangsri , Surin
Luang Pu Sarkon , Rayong
Luang Pu Sin , Rayong

This batch only 1,629 pieces Copper were made and specially invited to lead the ceremony was Geji Ajahn Luang Pu Thammarangsri whose amulets are known across the Kingdom to be very powerful and efficacious. Even Rama 9th visited Luang Pu in HIS far and hard to reach temple. 

This special batch was consecrated by also Luang Pu Sarkon of Wat Nong Krub and Luang Pu Sin of Wat Lahanyai, both being recognized close disciples of Luang Pu Tim Isarigo of renowned "Pong Prai Guman. 

Behind the Khun Paen mixed in were exactly 
 
Pong Prai Guman of Pu Tim
Nummun Phaya Seur Krong of Pu Tim 
Nummun Chang Prasom Krong

This 3 ingredients are famously known for Saneh, Metta Maha Niyom and Amnard. To bring in Maha Chok, Maha Larb. 

After the ceremony, they actually tried the amulet by tying 1 to a tree and fired 5 shots at it and none of the bullets were discharged from the gun. Up to individual to believe but it's Luang Pu Thammarangsri so I'm a strong believer.