This is a 5-ruble commemorative silver coin issued by the Soviet Union in 1991, commemorating the "Monument to David of Sasson." It was one of the last commemorative coins issued before the collapse of the Soviet Union and possesses unique historical and collectible value. Obverse (Design): Depicts the "Monument to David of Sasson" (located in Yerevan, Armenia, completed in 1959)—David of Sasson is a hero in the Armenian epic poem "David of Sasson," symbolizing national spirit; the surrounding text reads "Monument to David of Sasson, Yerevan 1959" in Armenian. Reverse (Coat of Arms): Features the Soviet coat of arms (hammer and sickle), "СССР" (Soviet abbreviation), the denomination "5 РУБЛЕЙ" (5 rubles), and the year "1991." 1991 marked the last year of the Soviet Union's existence, and this commemorative coin is part of a series issued by the Soviet Union to commemorate Armenian cultural landmarks. It is made of silver (90% silver content), is a proof coin, and had a limited mintage (only tens of thousands). It has been graded PR67DCAM by PCGS (a professional coin grading service).