I just wanted to report that at least some of the chains sold by Knupfer Modell. und Feinwerktechnik are indeed solid link, and that I have thus found what I was looking for.
More specifically I ordered their articles numbered bk-67 (2.5×3.5 mm links, 0.7 mm wire thickness, +/- 13.5 LPI), bk-68 (3×4 mm links, 0.8 mm wire thickness, +/- 9.5 LPI) and bk-69 (4×5 mm links, 1.0 mm wire thickness, +/- 10 LPI), of which the middle one, bk-68, turned out best to serve my current needs, i.e. for making up rigging block pendants on my Moonbeam build …

Although from a scale appearance view I best like the copper-plated steel chain with partially flattened oval links sold by SHG Models, these ones from Knupfer are among the better-looking plain oval brass chains I have found, and as usual when ordering from Knupfer, delivery was prompt and also contained two small chocolates, a seasonal (I suppose) variations on the mini-pack of Haribo Jelly Bears he otherwise always includes … 
Mattias