Sarnoff, Paul, Trading In Gold, Cambridge: Woodhead-Faulkner, 1980, pp128.
Bought in 1981 from MPH Bookstore at Stamford Road, this is an interesting book with some technical stuff about gold futures trading. However, it has two chapters talking about investing in physical gold bullion bars and coins.
For your information, I'd bought a nice used hardback of the same title from Romie sometime in the mid-1990s when he was then running Sultana Bookstore at Selegie Road. I'd sold that used copy to a bidder at Yahoo! Auctions Singapore about a year ago.