Bryan,
Thanks for those comments. You're right on the investment vs. collecting at this point. I am interested in the coins for collecting, but the investment aspect is very important too.
Now, for the answer.
The 1924 coin is the MS66. I would have thought that the 1925 was MS66 too, but when I looked at them side by side it looks like the 1924 has sharper lines. It is not as clean a coin and I think that is why I thought it would be the lower grade. I see a small scratch on the back of the 1924coin under the motto and it looks like a couple of scratches under the eagle on the light rays. And the top of the wing above the eagles head looks more worn on the 1925. Other than that, not much difference in them. I like the 1925 better because it is so much brighter.
Image:
1924 St Gauden $20 MS66 PCGS.jpg23.92 KB
Image:
1925 St Gauden $20 MS65 PCGS.jpg27.28 KB
Would you say the 1924 coin has toning? Still trying to get a handle on that one.
Here is another coin, graded by NGC that is MS65 but looks a lot worse than both of these coins:
Image:
1927 St Gauden $20 Front.jpg69.48 KB
Image:
1927 St Gauden $20 Back.jpg66.79 KB
Also, where are the bag marks on the 1924 coin? I want to learn more on what these look like as well. Maybe the NGC coin has bag marks on it?