I have bought on Ebay Swan 230B/50, the pen was not bad condition as you can see on pictures, but the cap is really broken – in two parts terrible heat discolouration, looks like nice chalange to restore it according antiques restoration rules 🙂 . Bellow first set of pictures, just before I begin, As usually I want to begin from easiest parts: pen, nib, clip.
After first cleaning and cap reshaping: