Well Catfish .
There are people who will 'dis-arm ' yr shell , the only ones I know are in my Atlanta GA area. There are others imo mostly on the East part of the US .
It looks to have been through a-lot ,in it 30 years , imo with the Sabot that deteriorated or gone it looks like it was in a privy for 100 years.
Give your thread some time and I think you may get some local info.
If you call the Police please you-tube the response . lol
All kidding aside please do be careful with it .
Good Luck