A commemorative medal for the Romanov Dynasty tercentennary. It was given to officials all over the Empire in 1913. The commemorative coin above was modeled after this medal. There are many varieties of it, forgeries and private made ones are quite common too.
On the obverse, which is quite similar to the commemorative rouble, are the first and the last tsars Mihail I and Nicholas II, and on the reverse the following text:
BЪ ПAMЯTb
300- ЛETIЯ
ЦAPCTBOBAHIЯ
ДOMA POMAHOBЫXЪ
1613-1913
Very rough translation is "For the 300 years of tsarhood of the House of Romanov 1613-1913".