Think I got a little quick to hope for a letter, the O is just the drilled part of the receiver for the base. Anyhow reduced to $450.00 You would have to take it apart or send it to a Qualified gunsmith to verify condition.
Signature images may not be larger than 600 pixels wide by 125 pixels tall. That smile says it all
[North Dakota -16degrees
"Things may come to those who wait, but only those things left by those who hustle."
- Abraham Lincoln