North Korea 2001 Chess World Champions 30ch (Botvinnik & Smyslov) set of 4 imperf progressive proofs comprising the 4 individual colours (magenta, yellow, blue & black)
North Korea 2001 Chess World Champions 30ch (Botvinnik & Smyslov) set of 4 imperf progressive proofs comprising the 4 individual colours (magenta, yellow, blue & black)