Here are the latest ones.F.&L.
— Fehlert & Loubier, patent attorneys; Berlin, 1904-192 g
Postmark is likely from one of the Berlin NW post offices, as that was where Fehlert & Loubier were located at the time. Unfortunately, the PO number is cut-off at the bottom. The canceller letter appears to be "g". It would have looked something like this, though I do't think 87 is the correct number based on the tiny fragment of the PO number that is visible.F.E.J./D.
— Ferdinand Emil Jagenberg, Mechanical Engineering, 1904-1924, or factory of the same, 1919-1923; Düsseldorf
Postmark is from Düsseldorf, but with the bottom missing, there's no way to be more specific.MMWC
— M.M. Warburg & Co., Bank; Hamburg 1., 1901-1927
Postmark would be from the Hamburg 1. PO, though I can't be more specific with the canceller letter missing. It would be of this general type.M&S
— Either an unknown company in Emmerich, 1920-?, or Möllmann & Sonnet, Essen, 1918-1931 (think they did iron work of some sort)
Postmark is some sort of machine cancel.AW
— Friedrich Heber, maker of Athleta-Werk, a brand of tools, saw blades, etc.; Remscheid, 1921-1930
Postmark is REMSCHEID * 1 f
. There were multiple variants of the REMSCHEID * 1 f
canceller. One was the "normal" one. One had a flat-topped "f" placed high in the bottom segment. One had the flat-topped "f" placed lower in the bottom segment. Yours is the flat-topped "f" placed high in the bottom segment. Here's the only example StampsX shows, which unfortunately isn't very good.
Here's what the "normal" one looked like, which is basically yours minus the flat-topped "f".S
— Sulima Tobacco & Cigarette Factory, F.L. Wolff Company; Dresden, 1913-1925
Postmark is a machine cancel from Dresden, probably of this general type.