HI Everybody , Question On A German Stamp

I have here a 400 thousand over a 15 stamp, the last zero has a precise part knocked out of it looking more like a 40C overprint. Is this a known variant or perhaps just an inking issue, it seems pretty precise. Thank you everyone here. The combined knowledge of the people who make up this particular site is really amazing and should have there own university in my opinion thanks any information is great

Hi I find the inflation stamps a fascinating sub-area of the German republic. I only have one idea, but it could be in the Michel specialized catalog. I have a 2016, but won't be in the same state with it for a few more days. Hopefully someone else can help you before then. Thanks for sharing and good luck!

Overprint flaws such as on your stamp are fairly common and typically are not noted in the catalog. Occasionally worth a couple of euros extra. While not valuable they are definitely collectible.

For the record, no listed variety matching the picture above. Personally, I would collect them regardless of value because they are tangible pieces of history!