This is a work by Wang Duo, accompanied by a certificate of collection from the auction department of Rong Bao Zhai, a famous shop in Liulichang, Beijing, China. It was purchased about 30 years ago, along with calligraphy scrolls by He Shaoji and Wu Changshuo. The price at the time was 250,000 yuan... I believe the exchange rate was around 16 yen per yuan. It is currently unmounted. I would like to sell it to someone who understands its value. The paper is old. It has what appears to be sun damage or stains, which have been present since the time of purchase. Please feel free to inquire about the price.