This is a very rare patch.  This is the Org. Todt sleeve insignia for female signals of the Org. Todt.  Unissued.  What makes this a rare patch, is that is made in BeVo.  Of the few found for sale they are the early version (not BeVo) and usually damaged from moths.  On the white there is some very faint soiling, but faint and should wipe off.   I had 12 on a roll and all but one sold is a few weeks!    Very hard to find!