The top coin has 1 countermark on the obverse and two at 90 degrees from each other on the reverse. All are ER.
1) 1829 AG-3 net po-1 N-9 - interesting coin. Can't figure out how the O in One disappeared anyway netted for damage. 2) 1832 VF-30 net F15 corroded N-3 3) 1833 G-6 net AG-3 harshly cleaned, signs of corrosion N-4 4) 1834 VF20 net F-12 Corroded and damaged N-2 5) 1835 VF30 net F12 Recolored(or coated) and corroded N-1. Some good details hiding in these coins.
The 1829 counterstamp on the obverse is a small eagle, probably applied by a gunmaker, locksmith, or another metal worker. This particular counterstamp is seen in many styles and sizes, and is relatively common. Nevertheless, it's still a nice stamp, though weakly struck. I can't tell what the reverse stamps are, but are probably two more eagles like the one on the obverse. The only way that they would add value to the coin, rather than detracting from it, would be if the maker had "signed" his piece. If he were found to be a well known gunsmith for instance, it would increase the value quite a bit. The "O" in one was destroyed when the counterstamp was applied as far as I can tell from the picture. Nice group of coins!