Hard to tell with the focus but a ramses pipe made by Cavicchi had a "dent" at the exact bottom of the mortise. It was necessary to get the hole drilled at the steep angle into the bottom of the bowl.
thank you again, my brothers! after a longwinding talk with the retailer, finally I"ve returned it ! thank you for your warmhearted help, looking forward to learning from you more!
pacis vobiscum!