I lurk particularly in the 1936-1964 proof coins, and the full step nickels, but I think I've now added a new category I will browse. Got this for $71.50 just mere minutes ago as I'm typing this, will be paying by money order. It's a 1910-S peso, ANACS AU-50 details, cleaned. Interestingly enough, it's the first Filipino peso I've owned that was made under U.S. sovereignty. Greysheet vs CPG on AU-50 is $160/210, while XF-45 is $90/120. I figure if I can get $100 out of it, it'd be a great day. Even if I get $80, which is half bid, I'm still making a bit over 10% profit. Overall, I'm comfortable with trying out U.S. Philippines coinage since the Greysheet is pretty well-established on that stuff. Edit: I was strangely the only bidder. I figure for $65, plus $6.50 buyer fee, the coin is worth it.
A very neat coin series I picked up a few of those a few years back ( "US" Peso's and centavos from the filipenas/philippines ) for similar reasons. Mine are all a bit more circulated Apparently they were at one time considered a "US territory" 1910-45 if I remember right.
I think they were actually a US territory starting in 1901, and ending in 1946, but either way, that stat gives us some more "USPI" coinage to collect. I think it's pretty interesting myself, considering I can find quite a bit of it in 25 cent bins. Most of the coins go for at least a $1 Greysheet bid, most more. The question is, though: would this series be both US and foreign? That may be the cherry on top of it all.