I don't know about that brand, but generally speaking, markings on the shank (or sometimes on the table) indicate the tip-opening and other measurements depending upon the marking.
Example, my Meyer alto pieces have their chamber-size marked on the shank and their tip openings and length-of-lay stamped on the table (in a diamond surround) . . . "6S-Medium Chamber", "7M-Small Chamber".
My Otto Link STM soprano pieces are stamped 7* and 8*, the 7* having a slightly more closed tip-opening than the 8*.
My Selmer pieces (soprano and alto) have tip-designations in letters . . . J, F, C*, etc. Each letter corresponds to a measurement.
These designators are not similar among various brands - each mouthpiece maker has his own way of designating various measurement. There are charts/tables around the Internet that will allow you to compare a Jody Jazz 7 to a Selmer F, etc. DAVE