If it looks bent, then yes. I am not an expert on this kind of stuff, but I think the roller press technology often resulted in coins with a slight curvature. I have quite a few (solidus from Baltic region, for example). Beautiful coin, by the way!
I've picked up some Silesia coins from the late 1600s to fill in gaps in my Poland OFEY for years when no Polish coins were minted. Here's a picture of the curvature on a 6 kreuzer coin from Wurttemburg-Oels around the same time. I measure about 1.5 mm on a 25 mm coin. I think it's my most extreme example.
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