The Cannon below was at Fort Jalali but has been relocated to Hazm.. probably for the ongoing exhibition along with Cannon from 27 different countries. The green imprint on another Portuguese Cannon is below.
As a bi product of searching for Portuguese battledress of the approximate period inspired by the green imprint of the below impression please see the astonishing series of tapestries at
http://www.warfare.altervista.org/15...r-far-left.htm