I looked for these birth certificates in the following civil registrars:
Świętochłowice
Huta Laura
Siemianowice
Michałkowice
Załęże
Katowice
Podlesie
Murcki
Wełnowiec
Katowice Zamek
Huta Jerzy
Chropaczów
Nowa Wieś
Kochłowice
Wirek
but without any success. Maybe they were issued by another registry office. Currently I do not have an access to the following ones:
Dąb
Bogucice
Dąbrówka Mała
Chorzów
Królewska Huta or ?
