Harry, do you still do any diving ? Are the rivers in the Florida, S.C. area murky?
I know what you mean by the state claiming rights to artifacts in the waterways. I think we have the same law in Louisiana. Diving here would also be a bit hairy. I don't think you could see more than 2 ft in these rivers/bayous
I have a few mainly 18th century. Nothing older. Two CW black glass bottles also. 2 mallets, a couple open pontil case gins, a few rev period cylinders, a couple dutch onions and one found in NC and one found from one of the wrecks off Yorktown (supposedly).
Two feet in SC would be a blessing. Much diving there is done with NO viz. The beam of a six-cell underwater light is just an orange glow. Kept going back, though. I suspect LA diving might be no-viz also.