One of them is described in detail online. But I've seen a couple of examples of a sunburst HG-09. I'm assuming the 'B' at the end of the model # on yours indicates the black finish. It's interesting to me as well that not all of the HG-09 models look the same. And since Hohner used different factories and even different countries to make the same model of guitar, determining country of origin is one thing specifically when it was made, another. From what I've been able to determine, Hohner didn't follow a plan for serial numbers that helps date them. According to Fjestad's Blue Book of Acoustic Guitars online, the years of production for the HG-09 were 1978-1985.īut I doubt they know the exact year your specific guitar was made. In the mid 1980s, Hohner shifted production from Japan to Korea, but I guess the people at Hohner would know when that production shift took place, and would also know the product run of the HG-09 model. Hohner said 1985? I'm assuming they knew it was MiJ.