Maybe I'm reading it wrong, but in Mr. Royals book (pg 46) he talks about the "CD"'s as being recognised in 1905. I have one (ser.# 320xx) which I believe is 1903. It has a 26 in. round barrel with PG and checkering .Doesn't this fit the "CD" mold? I know I should have it lettered but I'm a cheap so and so.