That is going to depend on the series number, the signatures, and sometimes the color of the seal. The 1957 series bills are common. They sell for $5-6 apiece and a dealer is unlikely to offer more than $1.25 each since he probably already has a large supply. If they should happen to be series 1886, 1891, or 1896, the retail value would be in the neighborhood of $50,000 for the set.
Sequentially numbered bills do not usually bring any more value to them. There are some collectors however that might pay slightly more for yours however, being that they are older and silver certificates.
About $1 for the silver content unless it is a proof or very high-grade uncirculated coin.
So many were made that even uncirculated coins are only valued for the silver, about $5.00
1957-B silver certificates are very common among collectors. If the bills are circulated, you might be able to get $200 for the set simply because there are so many in order. Uncirculated, they would sell for more but it's unlikely you would get more than $350 for the set.
In average condition it is worth $5-6 for the silver or so, depending on silver price. It might be worth slightly more if uncirculated or proof.
How rare? Which denomination?
What is the value of a 1998 uncirculated silver dollar
Please check your bills again and post a new, separate question with the date and denomination. No US banknotes are dated 1958; the last silver certificates were 1957 $1 bills.
You didn't provide a denomination, but the only silver certificates with that date are $1 notes. Values depend on what letter, if any, is next to the date: No letter: Circulated, $10 to $20. Uncirculated, about $45. "A" or "B": Circulated, $5 to $10. Uncirculated, about $40. "C": Circulated, $20 to $125. Uncirculated, about $450. "D": Circulated, $20 to $55. Uncirculated, about $300. "E": Circulated, $200 to $500. Uncirculated, about $1500.
Most are uncirculated, and some are proofs.
The U.S. did not issue any $1 silver certificates dated 1953.
The last silver certificates were printed with the date 1957. All green-seal dollar bills are worth face value only, unless they're uncirculated.
A 1948 uncirculated silver dollar that has benn certified uncirculated depending on grade would be worth 2000 dollars and up
This is not a rare date for silver certificates. As of 9-5-2011 it is worth $1.25 to $1.50 in circulated condition. In uncirculated condition it is worth $3 or more. This silver certificate should have a blue seal.
A Silver Certificate value depends on different factors, such as the year, denomination, condition. Most uncirculated Silver Certificates are worth approximately two to four times their face value.
This is not a rare date for silver certificates. As of 9-5-2011 it is worth $1.25 to $1.50 in circulated condition. In uncirculated condition it is worth $3 or more. This silver certificate should have a blue seal.
For any bill, not just silver certificates, the term uncirculated means it's never been spent. If a bill shows any wear, it's a good bet that it's been used to buy something. However if a bill was only used once and still retains its crispness it may be difficult to distinguish it from an uncirculated specimen. In these cases the bill may be graded as "almost uncirculated", pending inspection by an experienced grader.