Today I received the most puzzling coin I've ever had.
This is a 5 kopek 1889 of a completely different design compared with a regular coin:


Just to compare with the regular one:

The piece is very interesting - it is smaller, does not have a mintmark (SPB) but a star instead of it, no mint master initials under the eagle, and the word "kopeek" is misspelled - the last letter is "Б" instead of "ъ".
This coin is minted, there are no cast signs, details build a clean 90 degree angle to the surface. The edge is reeded. The weight is 0,60 gramm, 1.5 times less than the regular issue.
My personal opinion - This is a contemporary false coin for circulation, a very interesting exemplar.
What do you think about?