Yang EC335 - 1947 Su-Chung Machine overprint 'Changed To' with 4 stars and surcharge in red on Su-Wan Train issue, $50 on $10 purple, imperforate with bottom margin

Yang EC335 - 1947 Su-Chung Machine overprint 'Changed To' with 4 stars and surcharge in red on Su-Wan Train issue, $50 on $10 purple, imperforate with bottom margin