would some one care to help ID this odd piece I never saw before?

[Kristus Van Peer]

I only came across one tab.. I assume it is collar... thank you so much.

[HPL2008]

It's a collar patch for prison officials of the model worn from June 1942 to 1945.

This one is for the rank of Oberwachtmeister. It's missing its gold button, the imprint of which can still be seen on the cloth.

A Maschinenmeister (technical official of equivalent rank) wore the same patch, but with a gold cogwheel device instead of the button.

For an insignia chart, see: Strafanstaltsbeamte und Justizwachtmeister

[HPL2008]

The collar patch as illustrated in the 1942 uniform regulations for penal- and justice officials:

[harryamb2]

no more to be said.