Bidspirit auction | North Korea

North Korea - 1970, 5th Congress of the Worker's Party, 40ch, 10ch x9, complete souvenir sheet of ten stamps (normally comes without bottom right error stamp), size 153x189mm, fresh and nice, no gum as issued, NH, VF and only a few complete sheets survived, Est. $1,500-$2,000, Sc. #955