Each of three traces consists of a straight line (figure of I) and a curve (figure of U) as listed in [CHART 2]. So we have rifts in traces of I-U courses, and absence of J and U in alphabet. At this time we notice "double u gap" means these 2 interpretations of “u gap”.

 Now we get "Do double u gap. Gret RC showld beg LLL", where "showld" is "should", and "gret" means "great". The spelling "showld" for the word should can be seen in the records around 1620 usually (the early modern English), whereas it is like "sholde" or "scholde" in Middle English. The spelling “beg” is also can be seen around 1620, and it is like “beggen” or “biggen” in Middle English. But the sword is recognized to have been made around 700 years ago. And the word "gret" was used at that time (the period of Middle English). It is “great” in Early Modern English.  The intentional use of the word "gret" makes us to realize the sword (at least its inscription) was made after the fashion of the older period.

 Remaining AVQ/LFB cannot be traced as before with meaning. Here we recall that QVA stands for Qui Vixit Annis (Latin: Who Lived --- Years, used in epigraphy), and that L means 50. So this must be QVAL, i.e. "who lived 50 years". And other two letters FB must be a name of a person. We get FBQVAL, i.e. "F.B. who lived 50 years". But it is unnatural to record epigraphy in a cipher. So FBQVAL must have another meaning, i.e. "FB made this cipher at the age of 50".

 Who is FB? This person had a powerful technique and knowledge of cipher, and perhaps lived in the times of Early Modern English.