Bowstring length for a 58'' The Pecos model x-23

Question

I was given a bow from my friend, but he didn't have the bow string. I can get a string for it;but how long?

Answer 1

Should be written somewhere on the riser. AMO number.

Answer 2

Rule of thumb is the string length is bow length minus 3".  So if the bow length is 58" the string length should be around 55".