You do not have to list C&R gun you purchased or sold before you got your license in your bound book.
However ANY C&R gun you acquire or dispose of (even if you did not use your C&R) must be entered in the bound book while licensed.
"Each licensed collector shall enter into a record each receipt and disposition of firearms curios and relics." [27CFR §478.125(f)]"
Note the regulation makes no mention of how the firearm is acquired or disposed of.
If you sell a gun you acquired before you got your license,you can write "acquired before C&R" in the acquisition section-and the FFL you send the gun to.
My only C&R conversations/exposure with the CLEO is to hand him a copy of my renewal application and telling him no action is required on his part just the he received the copy as required.
