I'm having some trouble at times with numbering system used to identify various stringing machines. Right now, the machine on this page is causing me confusion in that I don't know if it's a Tecnifibre SPII (as in SP Two) or SP11 (as in SP Eleven). http://www.photostringer.com/tecnifibre_sp11_01.htm See the third photo in the top row for a closer look. Even though it looks to be numbered with Roman numeral II (as in Two or 2), I think from the precedent I've seen with other machine numbers from older Tecnifibre machines, it must be an eleven (11). Can anyone help me with this? Is this an SPII or SP11?