The Swastika symbol which look like the Nazi emblem, holds a great religious significance for the Hindus. Swastika is a pictorial character in the shape of a cross with branches bent at right angles and facing in a clockwise direction. The word SWASTIKA stems from the Sanskrit, an ancient Indian language and means 'being happy'. In India the word is related to things of good fortune because it means being happy. The cause of all life and all manifestations of life is movement.
A lot of these urns, usually made of bronze and brass are collected by beachcombers and sold for scrap. This one was sealed, possibly the lid was soldered on.