Serial numbers are counters and a security feature but rarely affect a bill's value or help to ID it. Please check your bill again and post a new, separate question with its seal color, date, and what letter if any is next to the date. That information is needed to estimate a value.
The serial number generally doesn't affect the value, unless it's unusually low (00000065), or maybe a star note (12345678*). What's more important is the series (year) and condition. Assuming it's a one dollar silver certificate, any of the series 1957, '57A, or '57B notes generally sell for around $3.
The exact value of a 1930 English pound is actually dependent upon a number of factors. Most importantly the condition.
.70
$3.73 in 2008 dollars equals $1 1976 dollar
Vendors that the company has made a large number of purchases from (in terms of dollar value). The account balance does not matter.
Depends on year and how low the serial number is.
The percentage of a partial bill really has little to do with its value. Any bill is worth its face value if it contains a complete serial number and any part of the other serial number.
$20
$20
$10
The serial number alone isn't enough to assign value, but rather the series year and the condition. Without more information, it's assumed to be worth one dollar.
Face value.
The value is more dependent on the year (series) of the bill. The serial number by itself isn't enough information.
As you have seen in many other postings, a bill's serial number almost never has anything to do with its value.
$5
The value is determined by the series (date) and condition.
The serial number isn't really useful in giving a value. Post a new question and include information like the series (date) and condition.