As I know, a coins of the Islamic Republic of Iran is not very common in USA. Moreover, I can't to find any of a thread about such coins in our forum. And I decided to meet this lack, because there are no taboo subjects in numismatics.
50 dinars 1942, aluminium-bronze, weight - 3,47 g., size - 20 mm, thickness - 1,5 mm, mintage - unknown.
1 rial 1976, copper-nickel, weight - 1,75 g., size - 18,3 mm, thickness - 1,1 mm, mintage - 61945000 pcs. "50th Anniversary of Pahlavi Rule". Ruler: Muhammad Reza Pahlavi Shah (1941-1979). The single release only.
10 rials 1977, copper-nickel, weight - 7,1 g., size - 28 mm, thickness - 1,6 mm, mintage - 24324000 pcs. Ruler: Muhammad Reza Pahlavi Shah (1941-1979).
Islamic Republic of Iran (since the April 1 1979). 2 rials 1986, copper-nickel, weight - 3 g., size - 22 mm, thickness - 1,26 mm, mintage - unknown.
20 rials 1989, copper-nickel, weight - 4,7 g., size - 24 mm, thickness - 1,4 mm, mintage - unknown. "8th Anniversary of Sacred Defence". The single release only.
50 rials 2004, aluminium-bronze, weight - 3,5 g, size - 20,2 mm, thickness - 1,33 mm, mintage - unknown.
100 rials 2004, aluminium-bronze, weight - 4,6 g, size - 22,95 mm, thickness - 1,36 mm, mintage - unknown. 100 rials = 0,0038 USD.
250 rials 2004, copper-nickel, weight - 5,5 g., size - 24,6 mm, thickness - 1,6 mm, mintage - uncknown. 250 rials = 0,0096 USD.
500 rials 2004, aluminium-bronze center in copper-nickel ring, weight - 8,91 g., size - 27,1 mm, thickness - 2,8 mm, mintage - unknown. 500 rials = 0,019 USD.
here are some of mine, this is a 1320ah, 5000 dinar,silver, 23.02 grams. i also have a 1324 silver 1 rial and a 1323 silver 10 rial. .
The design (with the phoenix-style bird from the Shahnameh) I like. But it is somewhat strange that, for a coin with such a low value, they would pick a bimetallic style. Christian