7 Roman Silver Siliquas (I Think) A Little Help...

I disagree. Does anyone else have an opinion? Please note that all of the siliquae after a certain time end in PS so the above theory requires all were struck by the 2nd officina (unless someone can show a PP or a PT).

Answer below for those not wishing to research it themselves:

PS = pusulatum or refined. If you have RIC X look on page 13. I note that searching for pusulatum is not an easy find online but the answer is pretty well down this page:
http://www.cardiff.ac.uk/share/reso...eSummary.pdf
where it says that the word is 'late Latin' possibly explaining its omission from dictionaries made for readers of Caesar and Cicero. I do not know if the word derives from pulsus or beaten. Was beating part of the refining process?

Also note that gold of the period has a mintmark ending in OB (obryzum meaning pure gold as opposed to pure 'refined' silver).