sure it is costing the mint more to make cents and nickels, it costs less to make dimes, quarters, halves and dollars, it all comes out in the wash.
I do not think nickel is magnetic, perhaps it is a contemporary counterfiet?
Happy Birthday, hope it was a good one for you.
An interesting distinction. Hoarding I think is collecting, minus the sorting, grading, or any organizing.
Separate names with a comma.