This cigarette case belonged to my late mother-in-law, who lived in Poland. There are total of four marks inside the case, two on each side.
One of the marks is same on both half's with the initials of "DN" inside rectangle (sorry I'm not sure how to insert the Cyrillic letters).
One of the other marks is a right profile with number 84, in oval, and the last mark is a right profile, round shape.
Can this be work of D.P. Nikitin? Is this piece authentic?
Also, does anyone know if this can be repaired? Especially the missing "button" to open the case.