What is the value of 100 bill series 1990 4 D?

The value of a 1990 $100 bill with a serial number starting with "4D" can vary based on its condition and any unique features it may have. In general, if the bill is in circulation and shows signs of wear, it may be worth its face value of $100. However, if it is in uncirculated condition or has collector appeal, it could be worth more, potentially ranging from $100 to several hundred dollars. For a precise evaluation, consulting a currency expert or a pricing guide is recommended.