The pages have tanned, and there are neat and minor pencil annotations on the edge, else all 10 volumes are in excellent condition, clean and solid. 1926 to 1929. Overseas customers please note that combined the ten volumes are heavy and will attract extra postage. "Carl Sonnenschein (July 15, 1876 - February 20, 1929) was a German writer, the founder of the Catholic student movement in Germany. He was born in Düsseldorf and died in Berlin.The Catholic Fraternities in Germany (KV) created the annual Carl Sonnenschein prize to award outstanding scientific research in Germany." (wikipedia)