Saxophones Stamp under serial number on Corton Tenor

[Punchysax]

Merry CHristmas folks ,
Anyone any idea of the stamped circle not sure what it says and what represents under the serial number on my Corton Amati tenor sax ?
Regards

 

[thomsax]

I think "II" means it is a late model: "Super Classic". But I'm not 100% sure. There was a "Classic Deluxe" as well. Around #200 000 (c 1990) Amati dropped these models and named thier saxes ASS, AAS, ATS, ABS with model digits as well. A #168 XXX sax is from the first/mid part of the 80's?