I have 12 and 24 pound mortar balls available. Both sizes are sand cored and cast from Paulson Brothers moulds. They are all cast from foundry zinc bars for uniformity and consistent weights.
The 12 pounder balls are 40.00 each.
The 24 pounder balls are 60.00 each.

You can email me directly at nssapropertymgr@aol.com with needs and questions.

The 12 pounder balls can also be used in Napoleons and howitzers. I also have 12 pound solid shot available for these if needed.