25 kopek 1847 СПB HI

Never found these apart from in auction, looks genuine but mintmark HI doesnt seem to exist before 1848.

Someone who can tell me more about it?

Your images are from two different nomination coins or one fake coin.

Side with eagle tells silver content. 2 zolotnika 10 ½ doli. That's poltina/50 kopeks. 10.32 grams at .868 fineness.

1847 НИ combo is known to be used only on rubles. So it is fake, which did not know how to make 25 kopek look legit. To be fair obverse and reverse did not age same way, which might tell that those are two different coins.

СПБ is mint

НИ is mintmaster

tokul

Your images are from two different nomination coins or one fake coin.

 

Side with eagle tells silver content. 2 zolotnika 10 ½ doli. That's poltina/50 kopeks. 10.32 grams at .868 fineness.

 

1847 НИ combo is known to be used only on rubles. So it is fake, which did not know how to make 25 kopek look legit. To be fair obverse and reverse did not age same way, which might tell that those are two different coins.

You might be absolutely right Tokul, 

I got my source from here:

Rusland. Nicholas I (1825-1844). 25 Kopeks 1847 СПB HI - online veiling Catawiki

In which they do let to appear they are both the same coin, with the weight of a 25 kopek, but the edge lettering doesn't make any sense too.

СПБ is mint

НИ is mintmaster