All US bills carry the signatures of two officials, the Secretary of the Treasury and the United States Treasurer. Many different people have served in those positions so depending on when a bill was printed it will carry different signatures. If you look at the bills in your wallet you should find many examples of different signers.
It can be difficult to associate a bill's printing date with either the "series date" or signature combination shown on the front because the rules surrounding the selection of dates aren't hard and fast.
Up till 1974, a new series date was put on a bill only when there was a significant design change. Usually the first date in a series was "plain"; i.e. the series date appeared by itself. When a new Secretary of the Treasury or Treasurer took office, a small letter would be placed by the date, starting with "A", then "B", and so on. (That practice in itself confuses many people because it means "A" bills are the second set in a series, "B" bills are the third, and so on).
During the mid-20th century there was significant political inertia and outright resistance towards changing bills' designs. That resulted in absurdities such as $1 bills printed in the early 1960s carrying a 1935 date simply because the design was the same. Finally in 1974 the Treasury started modifying the practice so that a new series date would be used not only when a new design was adopted but also when a new Secretary of the Treasury took office. Letters would be added only when a new Treasurer was appointed. Series dates now change much more frequently and letters, which once ran as high as G or H, now usually end at A or B - if one is used at all.
There were no 50.00 bills in 1957. Your answer is zero.
Please check your bills again. There were no 1957-series $5 bills. 1957 $1 bills are extremely common among collectors and are worth maybe $1.25 to $1.75 in average condition.
1957 $1 bills are silver certificates. In the old days, you could trade that dollar for $1 worth of silver, or silver dollars. Right now, you can sell them or keep it.
The U.S. did not issue any $1 bills with that date. 1935 and 1957 are the nearest dates. In fact, NO U.S. bills have that date.
Please check your bill again and post a new, separate question. There were no 1957 $5 bills, only $1 bills, and they all have blue seals.
There were no 50.00 bills in 1957. Your answer is zero.
There were no differences in the reverse-side design of any 1957 US $1 bills. Please check your bills again and post a new, separate question with more details about the suspected differences.
Please check your bills again. There were no 1957-series $5 bills. 1957 $1 bills are extremely common among collectors and are worth maybe $1.25 to $1.75 in average condition.
Please check your bills again and post a new, separate question for each one. > The only bills dated 1957 are $1 bills. > The last $5 silver certificates are from 1953. > The last $2 silver certificates are from 1899.
1957 $1 bills are silver certificates. In the old days, you could trade that dollar for $1 worth of silver, or silver dollars. Right now, you can sell them or keep it.
1957 is an extremely common series for $1 silver certificates. On average, they're worth around $2.
The U.S. did not issue any $1 bills with that date. 1935 and 1957 are the nearest dates. In fact, NO U.S. bills have that date.
Please check your bill again and post a new, separate question. There were no 1957 $5 bills, only $1 bills, and they all have blue seals.
The US didn't print any $20 bills dated 1957, only $1 bills have that date. Please check again and post a new, separate question.
Please check again and post a new, separate question. Only $1 bills were printed with the 1957 date.
There were no 1957 $10 bills issued in the U.S. Please check your bill again and post a new, separate question.
The U.S. didn't print any $2 bills dated 1957. Please check your bill and post a new question.