The Numismatic Auction. 1. New-York. 13 December 1982. Parviz Nemati auctioneer. Advertising poster. 53x36cm. The Galba cover coin, former J.P.O. collection, was published in Tradart, "Les monnaies de l'antiquité, splendeurs et témoignages", and then sold by 51 Gallery. From a private collection