The only time Jubal has a rope burn on his neck is when he's laying in bed where the Virginian dropped him. After that there is no blister, burn or scar on his neck. Even if the wound had healed, there should have been a scar.
After helping Tatum at his farm,the Virginian washes up outside, and a microphone dips into view a couple times at the upper right corner of the screen.