The value of a 1974 $100 bill with the letter "L" on it depends on its condition, rarity, and any unique features it may have. Generally speaking, a circulated 1974 $100 bill with the letter "L" would typically be worth its face value unless it's in exceptional condition or has some rare characteristics.
However, if the bill is in uncirculated condition, has unique serial numbers, printing errors, or any other distinguishing features sought after by collectors, its value could be higher. To determine the specific value of your bill, it's best to consult with a professional currency appraiser or collector.
(t - l) / l * 100%, where t = value this year and l = value last year
It is: -L+C = L which is the equivalent of -50+100 = 50
That L indicates a Federal Reserve bank branch. The series 2003 $2 bill is worth $2.
Percent of discrepancy = l observed value - accepted value l / accepted value X 100% note: the two bars around the the observed value - accepted value resemble absolute value signs
Prime Minister Robert L. Borden
Face value if worn, up to about $140 if in nearly new condition. As you've seen in others' posts, a bill's serial number really doesn't help to ID it. Its date, seal color, series letter, and condition are the most important factors.
50-100
50-100
Actually, (+/-) 10 would be better because all that comes out of the absolute value is 10 and squaring - 10 gives you 100.
D is the highest series letter for 1934 $100 bills. You're probably seeing either the Federal Reserve District letter or a plate-position indicator. In any case, most circulated Series 1934 $100 bills don't have a lot of extra value despite their age. Please see the Related Question for details.
50-100 USD
Depending on condition, $100-$150