Russian Marks, not sure how to decipher them. Any ideas?

[Markaty]

Hi all,

I have a Clip with an amber droplet that I am pretty sure is silver, which has a mark with a Cyrillic character (a backwards R)

Can anyone help decode the mark? I've added two pictures

[ALEKS]

Hi all,no assay mark, not silver. USSR, Kaliningrad amber combine, 1989.