Found new owner
The pipe markings are "SAVINELLI \ AUTOGRAPH \ 4 ITALY". The length is 15.5 cm, bowl's hight is 8.0 cm. External diameter of the bowl is 4.3 cm, internal diameter is 2.1 cm. The depth is 5.3 cm and this pipe weights 64 gr. Briar, acrylic stem, no filter. The pipe was very accurately smoked, the chamber has normal wear from use without any remarkable issues.