Truth 123
As you likely know by now I trust No-Body but My 'Late' Mother.
If you got the funds & the Patience to do a return if you have to ,go for it ...I would not tho.
Unless I could handle loosing the $.
As for the Magnet test , a funny thing is at my Coin Shop they can take a 'Strong' magnet , put a Morgan Dollar on the Glass top then put the magnet on the Glass underneath the Silver Dollar ; slide it around & it will move the Dollar.
Maybe Something in the Glass or maybe a .small, percentage of Nickel in the Coin. IDK
Also it seem's Stainless , Gold & Old Silver make for a strange combo.
GL on your decision.
Davers