Luang Pu Chu of Samnak Hin Lek Fai
Pu Chu has only 2 famous batches of Khun Paen under His name. This showed and another smaller batch made of lead (Takua) which has a fleet of fakes going around for many years. My shop has a few of these fakes from clients who willingly gave me after getting a Genuine piece from MKC.
Luang Pu Chu's Khun Paen is renowned for it's Maha Saneh and Guapor powder deriving from elephants in heat, secreted to attract the females to mate. So probably used to gives similar benefits that is to increase or improve one's charms or Maha Saneh.
Now all Pu Chu's Khun Paen is very hard to find.