notgeld
Money issued by an institution in a time of economic or political crisis, usually without official sanction from the central government.
uncountable
The catalog set I saw was pretty impressive (in size anyway). There were literally thousands of pieces of notgeld listed in three volumes!
A piece of notgeld.
countable, rare
I am interested also in any information about Specimens,^([sic]) Trial proofs, etc, and any error note of the above, as well as any unlisted notes, including emergency issues and notgelds.
Where it comes from
Unadapted borrowing from German Notgeld.
Adapted from the Wiktionary entry notgeld (CC BY-SA 4.0).