Lau is south west of Düsseldorf but close enough for a confusion.

The Semrau claims I have are 19.15, 19.17 and 19.21 I have no claim for 19.23, but that's is only a matte rof 2 minutes. (the next is Morlock at 19.25. The Jansen I/NJG11 claim is at 19.31. I have Jnaicke too at 19.34 (25km SE Düsseldorf). If you do not have Jansen who is your 19.31 claim besides Morlock ?
I seldom use Tony's data base only , but more a conjunction based on Tony, Safaric, Foreman , but mostly sources from local searchers (sometimes Luftarchiv etc..)

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