The banknotes of the Thai baht are part of the physical form of Thailand's currency, Thai baht. The issuance of the baht banknotes is managed by the Bank of Thailand. Throughout its history, the denominations have ranged from 1 baht to 100,000 baht. The circulating banknotes today in Thailand, however, are ranged from 20 baht, 50 baht, 100 baht, 500 baht and 1000 baht. The currently circulating series are 17th, 16th and 15th series. Thai baht banknotes commonly include the portrait or the picture of the sculpture of its kings. The obverses have been designed with the current king's portrait. Whilst, in the reverses, mostly the picture of notable kings and kings with the title "the great". Some reverses feature the King Bhumibol's sayings.