How much will the bank give for an undated 20p coin?

An undated 20p coin, which was produced in very limited numbers, can be worth significantly more than its face value due to its rarity. While banks typically do not exchange such coins for more than their face value, collectors may pay anywhere from £50 to several hundred pounds for an undated 20p coin, depending on its condition and demand. Therefore, it’s best to check with coin dealers or collectors for its market value.