So you did say Georgia. Sorry about that. It's still not New York or Texas.
Not seeing any Georgia case law that will help you either. There's a pretty good decision however that if you were to take this to court, to get monetary valuation MORE than the face value of the coins, you had better gone through standard numismatic grading and inventorying. Otherwise, it's just a sack of coins. That still doesn't address whether this fits the definiton of money in the policy however.
I suspect you are out of luck. As I said, the ANA warns you that standard homeowners policies aren't likely to be sufficient.
Absent precedent, you'd have to convince the court under a preponderance of the evidence that your collection doesn't fit the definition of "money." The problem is on one hand the law reads things literally. Money in the dictionary comprises coins, paper bills, and representations thereof. On the other hand, if you treated these coins by some legitimate standard as something beyond their pure currency, you may prevail.
Did you have appraisals, inventory of the grader-slabbed coins, etc...?