Mike's coin collection

Ok I have 3 coins in question ?..

1. 1974 Ike dollar is weighing out to 23.09 grams and sticks to a magnet only on one side of the coin really weird can anyone help me understand this?

Error wheat penny? by Michael Giles posted Aug 26, 2020 at 5:26 AM

is this an error?

Ike dollar under and over weight by Michael Giles posted Aug 26, 2020 at 5:36 AM

can anyone help me understand this and it sticks to a magnet?