25th Anniversary Sacagawea 2025 Golden Dollar 24k One Half-Ounce Gold Proof Coin Available July 31

It does, and they are definitely different appearing as far as the metal. Different appearance. The weight is also a telltale. 3X as heavy.
But sure shudder the thought of the stories about kids breaking in to the parents coin collection and spending it and it gets into circulation!

Yes...that is slightly terrifying. But education is the key here. Kids need to be aware of, if not actively involved in, your collection and know its value. I'd rather have them sell it for its worth (or close to it) for a down payment on a house or something than get pennies for it just to be rid of it. Records are important, and kids need to know what parts of your collection are PMs and any items that have more numismatic value than their constituent metals.

Oh anyone who collects coins should be able to tell this is not a regular Sac. As you said, my concern is Jr. (or a widow, ex-spouse, whoever) getting into the collection (whether it be mischief or inheritance) and doesn't know any better.

I did a video comparing a 2000 S proof Sac dollar with the 2025 W Gold proof:

Fantastic! Thank you for doing this and sharing it.

Thanks, I haven't sent anything via registered mail in a couple of years so keep forgetting when I refresh to track it it's going to be a slower transit due to the chain of custody and manual processing.

Congrats!