Greetings. I am having some trouble understanding a 1778 tax assessment in America, where the British pound sterling unit was utilized. I just want to be certain that I am transcribing the assessment correctly.

My real problem is with this statement:

This assessment made by the assessors of Walpole June ye 23 1778 containing the continental rate being £620 ” 2 and also £18 ” 4 for the town treasurer.

I get the £ symbol, of course. My question is about the use of the quotation mark between numbers. What would that have meant in this context in 1778?

The following pages contain columns with the following headings:

Name - Poll - Real - Personal

Then, beneath each of the Real and Personal headings, I find the following abbreviations:

L s d q

I have taken those abbreviations to mean pounds, shillings, pence and quarter pence (farthings).