Aleksandr Nevskij.

Thank you for moving from the Fake section, Alexei ! With all this Nevski trash in ebay I didn´t want to be anticipating.

Again: I hate rubbing on an order. But what I thought that was an "e" turned out to be just a spot. Put out the microskop because what seemed to me like a "2" hadn´t any rounded line on the top.
The large strong vertical line after the 9 under the screwpost is probably not significant for the text in its full length. On its beginning at the top a horizontal line gones to the right. And at 1/3 of length down there is a light rounded line to the right. That makes a " 5 " So the date is 1954.
After that an X I I or V I I . I´m tending to an V because of the accurate handscratching in the name. An X the writer maybe had done with longer lines underneath the crossing point of the lines. But both dates are possilble.
(Please excuse my londwinded english)

Thank you for the ideas. One thought I had about the letters was By, this tsch ,Y and N is difficult for a non cyrillic reader.

Andreas II

PS: Thank you, Art. I love this downsize programm!