7x57R DR Springer's Erben Wien SN 10488 http://www.egun.de/market/item.php?id=5629369
comes with a Kahles Hela 4 S 1 scope

seller says its from famous hungarian count, big game hunter and author Zsigmond Széchenyi(1898-1967)

http://theodorhary.com/bwana-kelele-im-bahn-des-schneeweisen-elephanten/

dont think his books are available in english but this would be something worthwhile