Without a photo to confirm we are reading the data correctly it is not ideal. As it stands it doesn't entirely make sense, but I'm guessing it is from the 4th Freiwilliger Feldzeug Kompanie. The 278 being his stammrollnummer. The reference to Division isn't making sense for me. Can you post a picture?
WW2 Battlefield Relics: German Erkennungsmarken decoded.