K.Telegraphenamt Crefeld 1919

Anyone have a reference for this token, or some background? Described as German not-geld, which certainly fits. I've not seen one quite like this before. 2.30g and 20mm.

Krefeld was named Crefeld up to Nov,25 1925 

I was able to find a couple paper notgeld issued from a telegraph office. 

Maybe someone could check their Funck catalog? I just want enough info to create a correct entry in Numista.

Not in Funck, Upton, or Lamb.

It seems to be Men22.2# 5929.1.

Menzel, 

Deutschsprachige Notmünzen und Geldersatzzeichen – Teil 2 – bekannte Ausgabeorte,

page 1252.

(This reference was made available as a free download a while ago.)

(I'm not sure why the topic title says “1919”. I don't see that in the image.)