It feels like it is made in 2 pieces. The top one goes down as far as the first ring band. It is very secure though and although moves ever so slightly when you wiggle, it won't come off.
Size (approx.): 41.3cm tall x 20c, at widest point, diameter of top lip 12.5cm
Weight: 4.6 kilos
Condition: Needs a good clean / polish. I'm not going to do it before shipping but will leave to the buyer who can decided how they want the item cleaned or not.