I just discovered that I evidently possess two magnetic Kennedy halves (clad), but I can only account for why I own one them.

I have Johnson’s Visual Coin Penetration, which came with one.

But the other? I have no idea where it came from.

I don’t believe that I ever set out to buy one just as a general standalone utility item. But it’s not part of any set I can identify. I’ve never owned a magnetic silver/copper or Scotch & soda set. No matching magnetic or shimmed flippers, shells, boxes, etc.

Racking my brains wondering where it came from, or how it came into my possession.

Are there any other commonly available commercial effects which it might have been part of, or been packaged with?

A T.U.C. ?

No, never owned a T.U.C. either.

Maybe you lucked out, got it as change somewhere along in your magical journey?

All I can figure is it must’ve been part of a package deal of some random bundle of magical miscellany I musta picked up at some point along the way.

Makes a good fridge magnet.

See it like this:
You now own
a Magnetic Dollar!

If you have any more 'problems',
...simply ask.

gallagher

Are they both regular strength? Is the odd one out a super strong magnet that you may have purchased for a Which Hand effect perhaps?

They seem about evenly matched, and are fairly strong. I have no real basis for comparison, other than a JG Thompson coin recently acquired, which seems a bit weaker by comparison (easier to shake loose).

Never bought a "Which Hand" effect.

An old poem reads ...
"Half again, half-again --
half-again more,
is the binding pledge
of newly weds,
whose love is boundless
and wants be filled
with now giving more
than needs command." so, maybe this is a portent inspired by your magnetic personality