“BenjaPakee” is actually an ancient word from Pali. Benja means 5 kind or type, Pakee means set or grouping. So BenjaPakee means 5 different types of amulets in a group or set.
This great BenjaPakee amulets are (from left) Phra Nang Phaya (Queen of Amulet),  Phra Phong Supan, Phra Somdej (King of Amulet), Phra Somgor and Phra Rod.
 
Phra  Nang Phaya discovered around B.E.2444 and  were created during of Ayuttaya era, Phitsanulok province. The temple was built for merits making to his Queen, the mother of King Naresuan, the Thai people given name "Queen of Thailand amulets".         Phra  Nang Phaya arevery famous for bless strong  with attractiveness and respectful from all others, also power on charm and safe from all dangers.
Phra Phong Supan were discovered on B.E. 2456 in  Wat Phra Sri Ratanamahathat in Supanburi province. Most of  unique of this amulets is at the back had a thumb print of the creator. 
A superb Buddha amulets had all mighty protective power   against weapon and bring good luck. 
Phra Somdej were created by Somdej Phra Buddhacara Toh       Prommarangsi (Somdej Toh). He's a son of 
                  King Rama I. To bless every life in this world for good   karma and strong protection against  negative energy.
Phra Somgor were first discovered on B.E. 2392 in Wat Phra Boromathat, Kamphaeng Phet province. 
The amulets were created in the era King Phra Maha Dharmarajalitai, the 5th  king of Sukhothai. A slogan for Phra Somgor " If you have me, you never get poor". 
Phra Rod was created by a hermit. First discovered during the earlier days of King Rama 5 reign when a pagoda from Wat Mahawan in Lumphun province. The Thai people regard this particular amulet as 
Buddha of Escape, they have superb Buddhistic power, especially in protection and being safe from all 
dangers and disasters or misfortunes.