I have recently acquired these three items and hoped you could help explain to me what they are. I believe they may be Persian mortars, but I am not sure. Any help would be greatly appreciated. The first one is approx. 2.5" w x 2.75" h (6.5 oz), the second one is approx. 2.75" w x 2.75" h (7.2 oz) and the third one is approx. 3" w x 3" h (6.7 oz). Thank you.

The first one is approx. 2.5" w x 2.75" h (6.5 oz), the second one is approx. 2.75" w x 2.75" h (7.2 oz) and the third one is approx. 3" w x 3" h (6.7 oz).