Sure, I'll check them. Post closeup photos in the What-Is-It forum. Or, send me your email address for direct contact.
I'll need precise measurement of their diameter (in 1/100ths-inch) and weight (in pounds & ounces). Those measurements are crucially important in distinguishing Artillery balls from the many varieties of Civilian-usage balls (such as Sports Shot Put balls, ball-bearings, Tumbler-Mill balls, etc).
For example, a 6-pounder caliber Solid Shot was 3.58" in diameter, and weighed 6 lb 1 ounce. So, if a ball's precisely-measured diameter is (let's say) 3.50 or 3.75", it is not the correct size to fit any cannon in artillery history, and thus cannot be a cannonball.
Weight is also very important. No steel cannonballs were used in America. Steel is a denser alloy than cast-iron, about 10% heavier. So, if a ball is the precisely-correct diameter to be a cannonball, but it is 10% heavier than that size of cannonball, it is a steel ball from the 20th-Century, not a cannonball.
I'll need precise measurement of their diameter (in 1/100ths-inch) and weight (in pounds & ounces). Those measurements are crucially important in distinguishing Artillery balls from the many varieties of Civilian-usage balls (such as Sports Shot Put balls, ball-bearings, Tumbler-Mill balls, etc).
For example, a 6-pounder caliber Solid Shot was 3.58" in diameter, and weighed 6 lb 1 ounce. So, if a ball's precisely-measured diameter is (let's say) 3.50 or 3.75", it is not the correct size to fit any cannon in artillery history, and thus cannot be a cannonball.
Weight is also very important. No steel cannonballs were used in America. Steel is a denser alloy than cast-iron, about 10% heavier. So, if a ball is the precisely-correct diameter to be a cannonball, but it is 10% heavier than that size of cannonball, it is a steel ball from the 20th-Century, not a cannonball.