Joe Boling writes:

Pete Smith writes:

Bob Neale had a more nuanced answer:

The dies contained two errors. Instead of "O.T." for Oregon Territory, "T.O." was mistakenly engraved, and where each partner's last initial appeared on the coins, Campbell's incorrectly appears as a "G." The company to avoid delay did not refashion the flawed dies.

While the $5 coins were being struck, Victor M. Wallace was engraving the dies for a $10 coin. The T.O. was properly changed to O.T., and C was substituted for the G in Campbell. The initials A (Abernethy) and W (Wilson) were omitted since they did not contribute toward purchasing the new equipment.

To read the complete article, see:Territorial : Oregon Gold(www.pcgscoinfacts.com/Hierarchy.aspx?c=850)

To read the complete article, see:MORE ON THE PROPOSED U.S MINT AT THE DALLES, OREGON(www.coinbooks.org/esylum_v15n15a10.html)