Due to the war, the alloy used was devalued and is made of poor metals (zinc) and low quality.
These coins are regularly found with defects linked to the zinc of the time: bubbles, laminations, minting weaknesses, etc.
They also tend to break or crack easily; handle with caution!
High grades are easily found, no year is rare.
You have a few sheets for this coin. If you confirm this action, you will loose all of these, and close all eventually related collection, sales and doubles.