The “morgan silver dollar” graded by the American Alliance Coin Grading Service? As far as anybody can tell, there is no such service, or at least they’re not a recognized grading service. Most “grading services”  without a website, address, phone number or email are usually “self-slabbers” who grade their own coins, sell them, and don’t accept submissions from the general public.

When a coin site says “graded by…” but doesn’t give you the grade, it’s probably barely above “good” quality, which is almost as low as one can get. The coins in the images look “proof” quality, but the fine print says

What You Get:
• 1878 Morgan Dollar in Plastic Case with Attractive Display Box

Uncirculated, 1878 Morgan Silver Dollar runs $90-$300. circulated in very fine or extra fine condition, $35-$80.

"Fine" is defined as having 50% of the image remaining. "Very Fine" has 75% of the image remaining. That’s not bright and shiny, folks. That’s dinged, dented, used.

It’s still a pretty coin, but know what you’re buying ain’t shiny.