noun
face value; face amount
Used in finance for the stated value printed on a bond, check, or similar instrument.
この債券の券面額は100万円です。
The face value of this bond is one million yen.
額面 is the more common term for face value, used in broader contexts including stocks and postage stamps. 券面額 is more specific to bonds and checks.
Compound of 券 (certificate, bond), 面 (surface, face), and 額 (amount). The exact historical derivation is uncertain, but the word is a straightforward financial term.