Today I found coin Marcus Aurelius. what is the meaning of this words? I found only that this is some festival PRIMI-DECEN-NALES-COS III-S
I believe this one commemorates his Decennales: From wiki "During the festival, the people offered up vows to the emperor, called vota decennalia, for the success and perpetuity of his empire. Roman coinage was specially modified during this time to indicate the undertaking of these vows, such as with the inscription VOTA SUSCEPTA DECENNALIA, or VOTIS X. From the time of Antoninus Pius, we find these ceremonies marked on medals: PRIMI DECENNALES; SECVNDI DECENNALES; VOTA SOL. DECEN. II; VOTA SVSCEP. DECEN. III. These vows must have been made at the beginning of every tenth year"
Bing is right about the festival. Here is another example of one of his coins commemorating said primi decenales festival, a sestertius.
Every 10 year they make game. but only marcus aurelius have that kind of coin? Or there is some other emperor