I have a prison ball and chain with the letters 563P inscribed into it.
can anyone tell me anything about it or is it worth anything.
I have had it myself about 30 years.
When it comes to a ball and chain it is not such an easy question.
The item pictured here was not made by a recognized manufacturer. That is clear. But it is still not necessarily a "fake". Chain gangs and similar punishments existed in jails and prisons in this country well past WWII. It is pretty likely that most of the hardware was made locally in the jail or prison or in a local shop.
So just because something looks homemade and relatively modern it is not necessarily a fake. It may have been cobbled together by a prison in 1950 in Alabama using modern chain and an arc welder.
Not to say that there are not fakes. Just go to eBay and you will see plenty of repros from South Asia.
Joe