Superb - and scarcely found! - black-class wound-badge (or: 'Verwundeten-Abzeichen in Schwarz') being a neatly maker- (ie. 'L/21'-) marked example that was produced by the (unusually seen!) maker (ie. 'Hersteller') named: 'Förster & Barth'
The truly very attractive - with certainty unusally found and I deem hardly used- nor worn! - black-class wound-badge (ie. wound-badge (or: 'Verwundeten-Abzeichen in Schwarz') truly retains most (ie. all!) of its original, black-coloured- and/or somewhat 'satin'-like finish: it only shows just minimally wear and was simply nicely preserved over the years. The wound-badge is - as stated above - neatly maker-marked with the (unusally found!) LDO- ie. makers'-designation: 'L/21' (as is clearly visible on the back of the badge as can be seen on the pictures) signifying that it deals with a piece that was produced by the desirable: 'Förster & Barth'-company as was based in the town of Pforzheim. Of course, are the (nicely integrated, regular- ie. thin-shaped- and magnetic) pin and/or: (typical) catch (-set-up) fully functional and of course present. This piece has never been cleaned nor polished: it shows some minimal dust and/or minimal staining as to be expected.