Another hat I picked up last friday. Goldsiegel homburg in dark blue in a size 56 or 57 (two size labels in the hat). No other labels in the hat. Brim at 6cm and crown at 11 cm gives it a nice classic shape. A brand I haven't seen or heard of before, but a very well made hat (sweatband measures 6 cm for example) with beautiful felt in a nice colour. It fitted me like a glove, so why not? My guess is 1960's.