This badge appeared many years ago and was said to have been worn by the REME LAD in Munster, (I can not find my note but it may have been the RSDG LAD). However I could find no evidence that the badge had been made for them or worn by anyone, all examples that show up are brand new.
The story of the man (kiepenkerl) can be found here;
http://translate.google.co.uk/transl...68%26prmd%3Dmc