Any info on the Nichicon SE series

I have some some Nichicon SE electrolytic caps that I found in the wrong place. Google could not find any data on them Does anyone know anything about them ? are they low leakage, audio or general purpose or ???

they are regular through the hole 47uf caps that have SE (M) printed on them



I am asking cause I just want to know !!
 
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I acquired these from a trustworthy source about 15 years ago and had forgotten about the bag
there were some interesting vintage German and Dutch caps also in the bag
 

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Interesting... they look legit, I think. Can you maybe take another, clearer photo of the negative band? What I've seen is that Nichicon series with longer (more than 3 letters) designations will only use the last two on the printing of their caps. I am not aware of any series ending with SE, especially not axial ones.