German Notgeld Collector Of 46 Years, From Uk.

Very interesting!

Very nice!

Agreed!
Although this isn't a specimen in my mind - it is just missing its serial number which could have happened when 2 pieces were stuck together when they went through the numerator machine.....
Lots of the catalogues state 'M' or 'Muster' (specimen) for pieces just missing a serial number......but it can't be correct. There has to be another form of cancellation on it. That is how all my GNCC members see the situation too. I'll post some more actual specimen examples to clarify if that helps?

Dillenburg - These are good examples to show as the specimen piece is missing its serial number AND it has some form of cancellation on it! The cancellation is usually placed where the serial number would go but not always. It meant that a serial number could not be added at a later time, by someone who wanted to use the note as a form of payment.
Coburg - normal and specimen pieces. The cancelation mark is wherethe serial would normally be. If that space was blank.....it would just be missing the serial number!

Yes @jbuck! You can often get notgeld that have 'Ungultig' or 'Ungiltig' stamped on them.........but not like this piece. Those other ones are just 'cancelled' pieces, most often handed in as payment and cancelled by the cashier, I suspect.......and which would usually have a serial number.

Here is another specimen piece (last scan):

No serial number AND a hole punch cancellation.

Excellent!