1880 O Morgan dollars
hammer all over the place when they come up. This happens when the auction has less interest. But once you cross into the upper level of collecting the number of deep pocket collectors is far less. The last one I saw in PCGS
graded MS-65, was last year an it was a "NO SALE" with reserve.
I know 3 collectors that just spent over 15,000 or more on a single coin, all 3 are out of the market for a little bit because they spent large money. PCGS
price guild has an MS-65 priced at 25,000 in their holder at MS-65, I think that number is a pipe dream for an MS-65 as the one that was a no sale did not make it to 1/2 that with a 17.5% BP.
As far as where you are better off collecting, with a better return in mind. I would say "anyone" that states he has a crystal ball is delusional! Coins and metal markets go up and down. Metals are really not a free market and coins do make the better investment but it comes down to venues that you liquidate as well as timing.
Coin collection advantage is, that if you enjoy the hobby you have enjoyment as well as an investment. But just like investing knowledge is key, and just like picking 20 stocks you will not make money on all of them!