Initially thought it maybe from one of the Sdkfz models, but I am not so sure. Hopefully somebody will recognise it soon enough.
Currently working on several KZ related projects, including items for the USHMM, Groß-Rosen Museum and various private concerns and studies. Available as a guide to KZ sites, contact for details.
"maka akaŋl oyate maŋi pi ki le, tuweŋi wíyópeya oki hi sni"