These are basal variety a lump of metal which once represented a coin.
Extremely poor condition with no face or collector value what so ever, In fact 90 percent of all coins are nothing more than scrap metal, Take a look on ebay under pre decimal and see the kilos and kilos of silver coins being auctioned for SCRAP why because there worth only that. If it is not a rare coin it is NOT collectable nor is it rare.
They are simply traded for there silver value only .
Now a RARE valuable collectable coin would be something like a 1930 Aust one penny cost of around $50,000 for one in mint condition or $1000 for average to poor the most sort after and most valuable penny in the world. Or maybe a 1923 half penny cost 20,000+ in mint condition, Or the lesser but still collectable a 1932 florin . These are rare collectables not a piece of worn out silver made in there millions where UNC units are still available. UNC is for uncirculated the only coin a real collector is interested in.