I have an 18s 17J B.W. Raymond (full plate),#7489915 Gr.180,in the original " Fahys No.1" case that appears to be gold filled.Would anyone know if this would be gold filled, or rolled gold plate?It doesn't say gold filled, or have a year warranty marking.I have also seen Fahys silveroid cases marked "No.1", so I'm a little confused.Thanks!...Ted.